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Why Should Zoos Be Banned

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Animal welfare, conservation.

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Why Are Zoos Bad? Why Animals Should not be Kept in Zoos?

Alexander Laybourne

March 7, 2023.

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To many people, a trip to the zoo is a fun day out for the family. Visiting a zoo is a chance for many people to see exotic animals they would otherwise be unable to see.

However, few people stop and actively consider why zoos are bad.

In this article, we will take a look at why zoos teach children the wrong lesson about captive animals.

As a late Gen-Xer-cum-early-Millenial, my childhood was rich with trips to visit zoos. However, looking back as an adult with a world-savvy eye, there is far more to animal captivity than meets the eye.

So Why are Zoos Bad?

While zoos can definitely be exciting places for families to visit, the fact remains that they are bad for animals. In most cases, animals in zoos lead very unhappy lives.

We say zoos are bad because animals are forced to live in unnatural, stressful, boring environments, leading to a lack of mental and physical stimulation. They are removed from their natural habitats and confined to small limited spaces and often forced to perform tricks or entertain visitors.

Zookeepers also often may neglect their healthcare needs. As a result, many animals at zoos may die prematurely from stress or illness.

You can surely help these animals by refusing to visit zoos and instead supporting sanctuaries where animals live in natural habitats.

What Are the Negative Effects of Zoos on Animals?

There are a great many negative effects of zoos on animals.When we visit zoos, we can see they often go to great lengths in order to recreate the animals’ natural habitats.

However, this is often not much more than an illusion for the customer. A small exhibit is never going to truly capture the vastness of the open world.

The common negative effects of zoos on animals are listed below.

• Animals often suffer in captivity
• Animals are removed from their natural habitats.
• Many zoos fail to provide the required minimum standard of care
• Healthy animals are killed
• Zoos don’t replicate animals’ natural habitats
• Zoos teach children the wrong lessons
• Zoos teach people that animal captivity is acceptable
• Animal protection laws are not strong enough
• Zoos are largely unethical
• Many visitors disturb and disrespect the animals
• Zoo animals are often drugged to be kept calm
• Euthanasia practices
• Zoos often have insufficient knowledge of animals.
• Increased risk of disease
• Zoos contribute to the exotic pet trade

What’s Bad About Zoos Overall?

Let’s get into the nitty-gritty details of why keeping animals in zoos is bad:

Animals Often Suffer in Captivity

Wild animals often suffer in captivity because they were meant to be free. Zoo owners go to great lengths to build enclosures that have a wild aesthetic and give paying visitors a taste of the wild world.

However, the truth is that no enclosure can come close to matching the vastness of an animal’s natural environment. Animals in zoos can sense this, and over time their confinement can lead to worrying behavioral changes.

Animals Are Removed From Their Natural Habitats

Many zoo animals are forcefully removed from their natural habitat. This relocation alone can come as a large shock and wreak havoc on the animals’ mental health. For some animals in zoos, the shock of their relocation alone can be fatal.

In addition, when animals are removed from their natural habitats, they are also removed from their family structure and social hierarchy. For many wild animals, this is a vital part of their life, and they can struggle to redefine their footing.

Once again, a change of this magnitude can cause captive animals to exhibit changing behaviors, which include self-destructive acts and unrelenting restlessness.

Many Zoos Fail To Provide the Required Minimum Standard of Care

The required standard of care for wild animals, such as those held by zoos, is wide-ranging and nigh on impossible for zoos to provide.

Outside of providing sufficient space to allow natural behaviors to develop, issues such as climate, diet, and the formation of a social hierarchy – where appropriate – make running a zoo a difficult task.

Even the best zoological park cannot fully capture the wild, and many smaller zoos fail to take effective measures to ensure the health and well-being of their animals.

A study by Bristol University found that many British zoos fail to provide animals with the required minimum standard of care.

Healthy Animals Are Killed

Running a successful zoo is about drawing in visitors as much as it is caring for animals. As a result, many zoos breed animals. Unfortunately, this is done under the guise of conservation and to protect endangered species .

However, only a certain number of each species are really needed, and so should breeding result in a sharp increase, these numbers are reduced via various methods.

Healthy animals in zoos are killed because they are not needed. In addition, baby animals that are deemed excess to requirements find their way into black market sales. This support of the exotic pet trade also results in a lot of preventable animal deaths .

Zoos Don’t Replicate Animals’ Natural Habitats

Many zoos create attractive enclosures to attract visitors. However, the vast majority don’t do enough to accurately replace an animal’s natural habitat. There is more to natural environments than just looks.

Most zoos or animal sanctuaries don’t have the space or the facilities to truly recreate the wild. Especially not for the broad spectrum of species they have in their park.

Animals need physical stimulation and a level of interaction with nature that we, as humans, cannot understand, let alone interpret and recreate.

Zoos Teach Children the Wrong Lessons

Many zoos give children the wrong lessons about wild animals and how to protect animals. Many zoos and aquariums offer behind-the-scenes tours and informative talks on animal welfare.

These tours often pretend to talk about their animals’ natural habitat and inclinations. However, they are really just teaching children about caring for animals in captivity.

Children leave most zoos with a misconception about how animals behave in the wild and what it takes to truly care for endangered animals.

Zoos Teach People That Animal Captivity Is Acceptable

In normalizing captivity zoos, and teaching animals to perform tricks for human entertainment, zoos and animal sanctuaries are spreading the message that animal captivity to normal, healthy, and fully acceptable.

The truth is there is a vast difference between genuine conservation efforts and endangered species protection and running a zoo. Many zoos claim to be helping preserve dwindling populations.

This may be true to some extent; however, many zoos are running breeding programs for their own benefit and have no interest in releasing their animals back into the wild.

Animal Protection Laws Are Not Strong Enough

Existing animal protection laws do not actually consider the true ramifications of captivity. Many animals in zoos are not used to confinement. Their natural habitat extends far beyond anything captivity zoos could provide.

For example, Orcas are migratory animals with a vast range. Being placed into a small tank, away from their family units, might not break existing animal protection laws.

The same applies to elephants. In zoos, elephants are often given a small outside enclosure and an internal ‘house.’ This is nowhere near enough space to provide an elephant with a life comparable to that of its wild counterparts.

However, that does not stop the silent damage that captivity delivers to such roaming animal species.

Zoos Are Largely Unethical

At the end of the day, Zoos are largely unethical places that are built under the pretense of habitat conservation but really are there to earn money and entertain people who want to be able to say they saw real-life wild animals.

The truth is that zoos are a prison for animals. They are contained in small spaces, often made docile through drugs and other medications, and slowly strip away all autonomy and freedom from all animals.

Most animals are taught to perform tricks and go against the grain of nature purely for human entertainment.

Zoos often do more harm than good, creating unnatural environments that look realistic enough to make any potential return to the wild all but impossible.

Many Visitors Disturb and Disrespect the Animals

Many visitors will disturb and disrespect the animals in a zoo simply because they feel as though they are owed a performance of some sort. They bought tickets, and the wild creatures should behave accordingly.

When in their natural environments, wild animals are not used to being confronted by humans. However, in a zoo, the boundaries between the wild and captivity are rearranged.

Visitors will hammer on the glass or clamor around an animal enclosure, calling and shouting for the creature to perform for their pleasure.

Zoo Animals Are Often Drugged To Be Kept Calm

Animals in captivity can struggle to adapt to their new environment. Animals begin to display erratic behaviors, self-mutilation, and an inability to settle.

Many zoos will then resort to drugging animals in order to keep them docile and ‘normal’ for the pleasure of the viewing public. Drugs given to animals include sedatives and antipsychotic drugs.

Euthanasia Practices

An animal’s worth is only equal to the attraction it offers to visitors. Zoos are expensive to run, often have a very tight budget, and cannot afford to maintain and support animals that do not ‘pull their weight’ in terms of attraction.

Once an animal has served its purpose, many zoos will either sell them or euthanize them.

Zoos also have the power to euthanize their animals when they themselves deem it permissible.

If an animal cannot be given sufficient space or is suffering from stress and not behaving as expected, the zoo is within its right to kill the animal(s).

Zoos Often Have Insufficient Knowledge of Animals

Zoo keepers are often trained and specialize in a particular breed or species. However, the truth remains that zoos often have insufficient knowledge of the animals they are housing.

It is not possible to have zookeepers versed in a detailed understanding of every single species.

Instead, they will hire generalists with a degree of knowledge specificity and run with that. This goes to the detriment of the animals in zoos and puts them at risk of receiving inadequate care.

Increased Risk of Disease

Zoos are home to many animals. Non-native animals are held in conditions that vary greatly from what they are used to living in. This alone increases the risk of disease, as animals are exposed to viruses they have never encountered before.

When factoring in the number of zoos breeding animals and the risk posed to baby animals, the change of disease skyrockets further.

There have also been reported cases of zoos not properly disposing of dead bodies when animals die on their premises. Some surplus animals or injured animals are even fed to predators as a means of life-cycle maintenance.

There is no end to the risk of cross-contamination and disease spread, especially when considering the fact that lots of zoos fail to provide the correct standard of care.

Zoos Contribute to the Exotic Pet Trade

When zoos find themselves with surplus animals, they need to find ways to reduce their numbers. One way that is rarely documented is the sale of other animals into the exotic pet trade.

Private individuals with the financial means use their money to procure rare or exotic animals from zoos to add to their own private collections. The sale of excess animals to traveling roadside zoos is another big problem.

What Are the Better Alternatives to Zoos?

The better alternatives to zoos are the options that don’t result in animals being held in conditions that are unsuitable and forced to live in natural environments.

Most people visit the zoo to see the big draw animals. Elephants, lions , tigers, rhinos, and such. All of these animals are well studied and have a plethora of documentaries and video footage of them in the wild.

Watching these is a much healthier and more educational way to learn about wild animals than visiting a local zoo.

In addition, a costlier but more educational option is to make arrangements to view animals in the wild. Nature reserves, bird watching, going on a safari. All of these options afford you a close view of nature exactly as it was intended.

Final Thoughts

We’ve discussed the reasons and can surely all now answer the question of why are zoos bad. The real question is, how can we change things?

Zoos are a part of culture across the world. If you go on holiday to any major destination, the chances are high that there will be at least one zoo and/or one aquarium nearby.

Personally speaking, I’ve been to zoos in Sydney, Australia, and all over the UK. I’ve been to zoos and aquariums in Winnipeg, Vancouver, and Vancouver Island, not to mention those in the Netherlands, Belgium, and France.

However, it does not change the fundamental fact that as the world changes, we must also become more aware of the darker side of such animal sanctuaries.

Will we ever see all zoos closed down? No, most likely not. However, through education and informative motions for change, we can make change the way zoos are run.

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Are Zoos Good or Bad for Animals? The Argument, Explained

Debates about the ethics of zoos abound — but when it comes to animal welfare, there are certainly more cons than pros.

Explainer • Entertainment • Policy

Words by Björn Ólafsson

For many people, zoos are the only chance they’ll have in their entire lives to see beautiful animals native to far-flung ecosystems — lions, elephants, pandas, lemurs — the list goes on. And they’re popular — over 181 million people visit a U.S. zoo every year . But zoos face criticism from animal welfare organizations and environmental activists for inhumane treatment of the animals they claim to protect. Zoos maintain that they are important aspects of conservation and education. 

So, what are the advantages and disadvantages of zoos ?  Let’s take a look at the pros and cons of these controversial organizations. 

What Are Some Pros and Cons of Zoos ?

First, not all zoos are created equal. While it is easy to imagine animal ethics as a binary of evil and moral, zoos can vary widely on how they treat their animals, how much space they are given and how the animals are obtained. Still, most zoos tend to have the same positives and negatives overall. 

Arguments Against Zoos

Poor conditions for animals.

Animals Often Only Have Quite Limited Space

Many zoos’ enclosures are too small, especially for animal species that are used to roaming, flying or swimming large distances in the wild. For example, polar bears are used to home ranges of about 1,000 square kilometers in the wild — large swaths of land and ice they enjoy exploring . In zoos, they get a couple hundred square feet. 

Zoos Are  Crowded

In addition to limited space, many zoos cram in as many animals as possible into the enclosures. Many visitors prefer seeing animals up close, instead of peering at them from afar, hidden in their dens or nests. This encourages zoos to increase the number of animals per exhibit,  increasing the likelihood of visitors seeing animals on the move near the boundaries of the enclosure. 

Animals Are Trapped in Unnatural Environments

Anyone who has visited a zoo knows the exhibits are a far cry from the natural landscape they are trying to imitate. Nearly all zoo enclosures contain fences, glass or other barriers for visitors to look through, which are inherently artificial. And the natural-seeming landscapes can sometimes be made out of astroturf, concrete or plastic.

Confinement May Alter the Behavior of Animals

The lack of space, unnatural environments and crowded conditions can directly affect the behavior of animals ; most notably in the form of what’s known as “stereotypy.” Stereotypy is a condition in which non-human animals engage in repetitive behaviors with no apparent purpose, such as pacing for hours on end, wagging tails abnormally or picking their own fur. 

The structure of zoos increases the likelihood of stereotypic behavior due to a lack of enrichment, mundane environments and boring, repetitive schedules. This prevalence of stereotypy in zoos even has its own name: “zoochosis,” or psychosis caused by zoos . 

‘Surplus’ Animals Can Be Killed

After an animal has reproduced successfully and the zoo no longer requires the animal to maintain an exhibit, the animal is deemed “surplus.” At this point, the animal’s welfare is no longer profitable . Zoos can sell the animal to private owners (who may keep the animal in tiny cages for amusement or kill the animal for taxidermy purposes), sell the animal to other zoos or enclosures, or “euthanize” the animal. 

Animals Are Often Mistreated 

Animal mistreatment is much more than hitting or beating an animal. It also includes harmful training techniques, separation from family members and forcing animals to behave in abnormal ways. 

In a report from World Animal Protection, three-fourths of zoos include human-animal interactions , many of which can be very stressful or physically harmful for animals. In some extreme cases, visitors rode on the backs of animals (causing injury) or encroached on the animals’ enclosure (causing stress).

Investigations into popular zoos sometimes reveal that caretakers don’t always clean the exhibits frequently , leaving the animals to live near their feces. The research also reveals many zookeepers hitting animals who “misbehave,” and not helping animals with injuries sustained in the enclosures. While not all animal caretakers behave this way, the reporting suggests many zoos around the world are lax with animal welfare. 

Animals Don’t Like Being Visited

The mere presence of human beings can negatively affect wild animals, especially in massive crowds that are common at zoos. Being bombarded by the sounds, smells and appearances of swaths of humans can trigger the stress responses of some animals . Some studies show that the number of visitors correlates with the amount of stress hormones in many animal species. 

Animals Struggle to Form Connections

Many animals are highly social creatures. Elephants, lions, pigs, cows and many more species are shown to have complex connections, hierarchies and relationships with members of their own kind — especially with friends and family. However, zoo animals rarely stay with the same herd or family for their entire lives. Instead, zoos opt to transfer, sell, buy or relocate animals throughout their lifespans, making it difficult for animals to form social connections . This lack of bonding can harm the animals emotionally. 

Zoos Are for Humans, Not Animals

Most zoos are for-profit enterprises, meaning they have one goal in mind: maximizing revenue. It is easy to see how making more money can come at the expense of animal welfare. For example, a zoo is unlikely to fund an exhibit expansion if it isn’t cost-effective, regardless of its benefits for the animals inside. While many zookeepers form real bonds with their animal companions, the animals still exist under a for-profit, human-centered organization. 

Zoos Promote Human Superiority

The aesthetic nature of zoos — animals in panopticon-like enclosures, viewed 24/7 by members of a different species — can reinforce human superiority. As moral philosopher Lori Gruen writes in her book, “visitors leave the zoo more convinced than ever of human superiority over the natural world.” Of course, zoos also reinforce the idea that humans have a right to take away animals’ freedom and bodily autonomy.

Zoos Don’t Always Help with Conservation — Some Wild Animals Have to Be Caught to Bring Them to Zoos

Many animals in zoos are born in captivity, but that’s not the case for all. Many animals are taken directly from the wild , often when they are babies, to make the transition to captivity a bit easier. At times, this is done in the name of conservation, or when a wild animal is very ill. But many zoos will take animals from the wild, or buy animals from unethical animal traders. 

It’s Often Not Possible to Return Animals to the Wild

Releasing an animal into the wild isn’t always successful, especially if the animal has spent time in climates different from their native regions, like jungles, savannas or ice caps. Properly preparing animals for success in the wild is a multi-stage process that can require thousands of dollars — and it doesn’t always work . Captive-born predator species — disadvantaged by being born and raised in an artificial environment — only have a survival rate after being released into the wild of 33 percent , according to one study. As a result, re-release is not a priority for many zoos.

Zoos Are Poorly Regulated

While there exist many laws that protect animals, such as the Animal Welfare Act (AWA) and the Endangered Species Act , they only offer minimum protections . For example, the AWA excludes entire species of animals, like mice, farmed animals, birds and all cold-blooded animals. Its “minimum” standards of care usually ensure the animals’ safety, not their welfare or happiness. Many animal law experts say these regulations don’t go far enough . 

What Are the Pros of Having Zoos?

They Can Be Important for Researchers

Biologists and zoologists can benefit from studying animals in zoos. Some breakthroughs in animal behavior and treatment, like why elephants swing their trunks or how gorillas develop heart disease, have been made possible because of zoos’ ease of access . However, not all animals behave the same in captivity as they do in the wild, so not all research is possible in zoos. 

Zoos Are Educational — People May Behave “Eco-friendlier” After Going To the Zoo

Zoos can kickstart individuals’ interest in biodiversity, which is a critical aspect of environmental protection. Many zoos include calls to action in their exhibits, highlighting how endangered animals are being poached, driven away, or otherwise killed by human activity. This can inspire some people to behave more conscientiously. One limited survey found that 35 percent of eco-friendly people learned sustainable behavior from zoos . ‘

Zoos Can Help Educate Children About Animals

Zoos are a quintessential school experience for many young people. Children love learning about animals up-close in a safe environment — in fact, education is possibly the biggest advantage of modern zoos. Many programs, like school presentations, guided tours, informational exhibits, and talks with zookeepers can trigger a lifelong love of animals in children .  

But zoos aren’t perfect in this regard. According to a study of zoo visitors in the UK, only 34 percent of children learned more about animals at zoos (the result was slightly better when the children were given  a guided tour). Worse, children did not feel empowered to help with conservation efforts after visiting a zoo. This suggests that if zoos care about education, they need to more actively reach out to schoolchildren for empowerment and education. 

Going to the Zoo Is Affordable

More ethical ways of engaging with animals without removing them from their natural habitats — like whale watching, safaris, hikes, or excursions — are usually expensive or inaccessible for many people. Zoos tend to be relatively cheap for the average family that wants to learn about animals. 

Conservation

Zoos Can Protect Endangered Species from Extinction

Zoos often claim they can protect entire species from extinction through conservation programs that involve breeding more animals in captivity and then releasing them into the wild. This is especially important for endangered species like pandas. 

While these conservation efforts are truly important, they don’t represent the majority of a zoo’s activities, nor are zoos leaders in conservation worldwide. At the National Zoo, for example, only one-fifth of animals are endangered . In North America, zoos only contribute about 14 percent of all animals reintroduced into the wild as part of a conservation program. Zoos also tend to focus on headline-grabbing endangered animals to bring in visitors, like pandas, elephants or tigers, as opposed to lesser-known but crucial species, like tamarins, kakapos or wombats. 

Are Zoos Good or Bad for the Environment?

Zoos claim to support global biodiversity through conservation efforts like protecting endangered animals. This is somewhat true, although it varies greatly from zoo to zoo. 

On the other hand, zoos are big polluters and use up lots of resources , especially energy and water . Aquariums in particular use tons and tons of water. Zoo animals also generate waste that may or may not be composted or disposed of correctly.

Should Zoos Exist or Be Banned?

Given the many ways that zoos are unethical to animals, the flawed attempts to contribute to conservation, and the positioning of humans as superior to animals, many animal ethicists believe zoos should not exist — or at least, not exist in their current form . 

For example, animal philosopher Dale Jamieson says in his book Ethics on the Ark that zoos primarily “alleviate our sense of guilt for what we are doing to the planet, but they do little to help the animals we are driving to extinction.” He continues to argue that zoos exist for humans alone , and that it is very difficult to wave away the inherent immorality of depriving animals their liberty for the sake of human amusement. 

Instead, private conservation programs can benefit endangered animals without showcasing them to the public. Animal sanctuaries, which are  areas of land in which endangered and other animals are protected by humans, are also advantageous for both individual animals and global biodiversity . 

Zoos do have advantages — fostering curiosity and education chief among them. But experts believe there are other ways of accomplishing these goals without resorting to zoos with tiny enclosures. Excursions, nature documentaries, safaris, local gardens, hikes, boat tours and other ways of interacting with nature don’t involve taking animals out of their natural habitats. 

The Bottom Line

If you do choose to visit a zoo, opt for zoos that have certifications from independent animal welfare organizations. If you are interested in animal conservation, you’d be more impactful donating to a non-zoo animal protection organization instead. And if you do want to visit animals, consider an animal sanctuary or an ethical safari, where you can see animals in their native environments.

Independent Journalism Needs You

Björn Jóhann Ólafsson is a science writer and journalist who cares deeply about understanding the natural world and her inhabitants through stories and data. He reports on the environmental footprint of the meat industry, the alternative protein sector and cultural attitudes around food. His previous bylines include the EU Observer and Elemental. He lives in Spain with his two lovebirds.

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Are Zoos Good or Bad for Animals?

Please try again

Zoos are great, right? You get to be up close and personal with some amazing animals that you’d pretty much never get to see in the wild. Clearly, zoos are a win for people. But when it comes to the animals, zoos might cause more harm than good. Should zoos exist?

TEACHERS: Guide your students to practice civil discourse about current topics and get practice writing CER (claim, evidence, reasoning) responses. Explore lesson supports.

How did zoos become a thing? Humans have been capturing and displaying exotic animals for thousands of years. The earliest known collections date back to 3500 BCE in Egypt, where rulers kept hippos, elephants, baboons, and different species of large cats. Now back then, that didn’t mean that your average Egyptian could go check any of that awesomeness out. These early zoos were really just a way for kings to flex on other kings. Modern zoos, where the public can come and watch animals exhibiting their natural behavior, didn’t really become a thing until the early 1800s. The longest continuously operating zoo in the world is the Vienna Zoo, which has been going strong for more than 260 years.

What are the arguments in favor of having zoos? Zoos may be great entertainment, but their big goal is to educate the public about wildlife and what we can do to protect them. Zoo animals are sort of like ambassadors for their counterparts in the wild. Zoos also contribute to scientific research. “Zoo” is short for zoological park, and zoology is the scientific study of animal biology and behavior. In addition, zoos work really hard to save animals that are threatened in the wild. Zoos can take at-risk animals, breed them in captivity, and then reintroduce them back into the wild.

What are the arguments for NOT having zoos? Zoos have their problems. Not all zoos are created equal. Some are clean and well staffed, others aren’t. There are some in the richest cities in the world, and there are some in conflict zones. What this means is that not all zoos have the resources to properly care for the animals they house. And for many critics, no amount of education or research justifies keeping animals captive. That captivity can be REALLY bad for both physical AND psychological health. And while zoos have been really helpful is saving endangered animals, it doesn’t work out for certain species. For example, most large carnivores like lions and tigers that are bred in captivity die when released into the wild. It turns out that they haven’t developed the natural behaviors they need when they’re out on their own and have to fend for themselves.

SOURCES: Do we need zoos? (The Atlantic) https://www.theatlantic.com/news/archive/2016/06/harambe-zoo/485084/

Why zoos are good (The Guardian) https://www.theguardian.com/science/lost-worlds/2014/aug/19/why-zoos-are-good

The case for the end of the modern zoo (New York Magazine) http://nymag.com/intelligencer/2014/07/case-for-the-end-of-the-modern-zoo.html?gtm=bottom

Zoos and their discontents (New York Times Magazine) https://www.nytimes.com/2014/07/06/magazine/zoo-animals-and-their-discontents.html

Stress and lack of exercise are killing elephants, zoos warned (The Guardian) https://www.theguardian.com/science/2008/dec/12/elephants-animal-welfa re

Most Captive-Born Predators Die If Released (National Geographic) https://www.nationalgeographic.com/animals/2008/01/predators-captivity-habitat-animals/

Captive Breeding Success Stories (PBS) https://www.pbs.org/wnet/nature/the-loneliest-animals-captive-breeding-success-stories/4920/

Quantifying the contribution of zoos and aquariums to peer-reviewed scientific research (Facets Journal) https://www.facetsjournal.com/doi/pdf/10.1139/facets-2017-0083

Evaluating the contribution of zoos and aquariums (Conservation Biology) https://warwick.ac.uk/fac/soc/sociology/staff/jensen/ericjensen/moss_jensen_and_gusset_2015-evaluating_the_contribution_of_zoos_and_aquariums_to_aichi_biodiversity_target_1_final_published_version.pdf

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Are Zoos Ethical? Arguments for and Against Keeping Animals in Zoos

Zoos, if done right, could be a good thing for the animals and the public—yet many so-called zoos get it terribly wrong.

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A Brief History of Zoos

Arguments for zoos, arguments against zoos, the last word on zoos.

A zoo is a place where captive animals are put on display for humans to see. While early zoos (shortened from zoological parks) concentrated on displaying as many unusual creatures as possible—often in small, cramped conditions—the focus of most modern zoos is conservation and education. While zoo advocates and conservationists argue that zoos save endangered species and educate the public, many  animal rights activists believe the cost of confining animals outweighs the benefits, and that the violation of the rights of individual animals—even in efforts to fend off extinction—cannot be justified. Let's dive into whether zoos are ethical and if they truly encourage education and conservation.

Humans have kept wild animals for thousands of years. The first efforts to keep wild animals for non-utilitarian uses began about 2,500 BCE, when rulers in Mesopotamia, Egypt kept collections in enclosed pens.  Modern zoos began to evolve during the 18th century and the Age of Enlightenment when scientific interest in zoology and the study of animal behavior and anatomy came to the fore.

Early zoos were a dismal affair. Animals were kept in small enclosures with little if any, greenery. With a scant understanding of what the various animals needed, many perished relatively quickly. In accredited zoos in the United States and globally, things are better. Primates have gone from barren cages with little furniture to naturalistic and sometimes semi-free-ranging designs. But is it enough?

• By bringing people and animals together, zoos educate the public and foster an appreciation of other species.
• Zoos save endangered species by bringing them into a safe environment for protection from poachers , habitat loss, starvation, and predators.
• Many zoos have breeding programs for endangered species . In the wild, these individuals might have trouble finding mates and breeding, and species could become extinct.
• Some zoos have conservation programs around the world that use the zoo's expertise and funding to help protect wildlife against poaching and other threats.
• Reputable zoos accredited by the Association of Zoos and Aquariums are held to high standards for the treatment of their resident animals. According to AZA, its accreditation guarantees the organization has undergone strict evaluation by recognized experts to ensure the highest standards of "animal management and care, including living environments, social groupings, health, and nutrition."
• A good zoo provides an enriched habitat where the animals are never bored, are well cared for, and have plenty of space.
• Seeing an animal in person is a much more personal and memorable experience than seeing that animal in a nature documentary. People are more likely to foster an empathetic attitude toward animals.
• Some zoos help rehabilitate wildlife and take in exotic pets that people no longer want or can no longer care for.
• Both accredited and unaccredited animal exhibitors are regulated by the federal Animal Welfare Act, which establishes standards for animal care.
• From an animal rights standpoint, humans do not have a right to breed, capture, and confine other animals— even if those species are endangered . Being a member of an endangered species doesn't mean the individual animals should be afforded fewer rights.
• Animals in captivity suffer from boredom, stress, and confinement. No pen—no matter how humane—or drive-through safari can compare to the freedom of the wild .
• Intergenerational bonds are broken when individuals are sold or traded to other zoos.
• Baby animals bring in visitors and money, but this incentive to breed new babies leads to overpopulation. Surplus animals are sold to other zoos, circuses , and hunting facilities . Some zoos simply kill their surplus animals outright.
• Some captive breeding programs do not release animals back into the wild . The offspring may be forever part of the chain of zoos, circuses, and petting zoos .
• Removing individual specimens from the wild further endangers the wild population because the remaining individuals will be less genetically diverse and may have greater difficulty finding mates. Maintaining species diversity within captive breeding facilities is also challenging. 
• If people want to see wild animals in real life, they can observe wildlife in the wild or visit a sanctuary . (A true sanctuary does not buy, sell, or breed animals, but instead takes in unwanted exotic pets, surplus animals from zoos, or injured wildlife that can no longer survive in the wild.)
• The federal Animal Welfare Act (AWA) establishes minimal standards for cage size, shelter, healthcare, ventilation, fencing, food, and water. For example, enclosures must provide "sufficient space to allow each animal to make normal postural and social adjustments with adequate freedom of movement. Inadequate space may be indicated by evidence of malnutrition, poor condition, debility, stress, or abnormal behavior patterns." Violations often result in a slap on the wrist and the exhibitor is given a deadline to correct the violation. Even a long history of inadequate care and AWA violations, such as the history of Tony the Truck Stop Tiger, does not necessarily ensure abused animals will be freed.
• Animals sometimes escape their enclosures, endangering themselves as well as people. Likewise, people ignore warnings or accidentally get too close to animals, leading to horrific outcomes. For example, Harambe, a 17-year-old western lowland gorilla , was shot in 2016 when a toddler accidentally fell into his enclosure at the Cincinnati Zoo . While the child survived and was not badly injured, the gorilla was killed outright.
• Petting zoos have been linked with numerous incidents of diseases including E. coli infection, cryptosporidiosis, salmonellosis, and dermatomycosis (ringworm).

In making a case for or against zoos and whether zoos are ethical, both sides argue that they're saving animals. Whether or not zoos benefit the animal community, they do make money. As long as demand remains, zoos will continue to exist.

Since zoos are likely inevitable, the best way to move forward is to ensure zoo conditions are the best possible for the animals that live in captivity and that individuals who violate animal care health and safety sanctions are not only duly punished but denied any future access to animals.

One day we may look back at zoos and marvel at their barbarity. Or, one day we may look back at zoos and be grateful for the species they saved from extinction. Of these two scenarios, only time will tell.

Hosey, Geoff, et al. Zoo Animals: Behaviour, Management, and Welfare . Oxford University Press. 2013.

Hosey, G. (2023). The History of Primates in Zoos . In: Robinson, L.M., Weiss, A. (eds) Nonhuman Primate Welfare. Springer, Cham.

“ Species Survival Plan Programs .” Association of Zoos & Aquariums.

“ Accreditation Basics .” Association of Zoos & Aquariums .

“ Animal Welfare Act and Animal Welfare Regulations .” U.S. Department of Agriculture .

Meagher, Rebecca K., Georgia J. Mason. “ Environmental Enrichment Reduces Signs of Boredom in Caged Mink .” PLoS ONE , vol. 7, 2012, doi:10.1371/journal.pone.0049180

Kleiman, Devra G., et al. Wild Mammals In Captivity: Principles And Techniques For Zoo Management, Second Edition . University of Chicago Press. 2010.

Gunasekera, Crystal Allen. “ The Ethics of Killing “Surplus” Zoo Animals .” Journal of Animal Ethics , vol. 8, 2018, doi:10.5406/janimalethics.8.1.0093

Brichieri-Colombi, Typhenn A., et al. “ Limited Contributions of Released Animals from Zoos to North American Conservation Translocations .” Conservation Biology , vol. 33, 2019, pp. 33-39., doi:10.1111/cobi.13160

Krasnec, Michelle O., et al. “ Mating Systems in Sexual Animals .” Nature Education Knowledge, vol. 3, no. 10, 2012, p. 72.

“ 9 CFR § 3.128 - Space Requirements .” Cornell University Legal Information Institute .

“ Animal Welfare Act Enforcement .” U.S. Department of Agriculture .

Conrad, Cheyenne C. Conrad et al. " Farm Fairs and Petting Zoos: A Review of Animal Contact as a Source of Zoonotic Enteric Disease ." Foodborne Pathogens and Disease, vol. 14, 2017, pp. 59-73., doi:10.1089/fpd.2016.2185

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Are Zoos Immoral?

A guest opinion essay argues that modern zoos are harmful to the health and well-being of animals. Do you agree? Is it time to rethink the zoo, and perhaps even end them?

By Jeremy Engle

Do you like going to the zoo? Do you have a favorite?

Have you ever stopped to consider the possible harmful effects zoos might have on the animals?

In “ Modern Zoos Are Not Worth the Moral Cost ,” Emma Marris, an environmental writer, asks the reader to reconsider the value of zoos and the effects of captivity on the animals we visit:

After being captives of the pandemic for more than a year, we have begun experiencing the pleasures of simple outings: dining al fresco, shopping with a friend, taking a stroll through the zoo. As we snap a selfie by the sea lions for the first time in so long, it seems worth asking, after our collective ordeal, whether our pleasure in seeing wild animals up close is worth the price of their captivity. Throughout history, men have accumulated large and fierce animals to advertise their might and prestige. Power-mad men from Henry III to Saddam Hussein’s son Uday to the drug kingpin Pablo Escobar to Charlemagne all tried to underscore their strength by keeping terrifying beasts captive. William Randolph Hearst created his own private zoo with lions, tigers, leopards and more at Hearst Castle. It is these boastful collections of animals, these autocratic menageries, from which the modern zoo, with its didactic plaques and $15 hot dogs, springs.

Ms. Marris describes how the “educational day out” model of zoos endured until the late 20th century, when zoos began actively rebranding themselves as serious contributors to conservation, functioning as “ambassadors” for their species and teaching humans to care about wildlife.

However, she writes, while species such as the Arabian oryx, the California condor and Black-footed ferrets were saved from extinction by the concerted efforts of zoos, these popular public institutions remain largely about entertainment and family outings:

A fine day out with the family might itself be justification enough for the existence of zoos if the zoo animals are all happy to be there. Alas, there’s plenty of heartbreaking evidence that many are not. In many modern zoos, animals are well cared for, healthy and probably, for many species, content. Zookeepers are not mustache-twirling villains. They are kind people, bonded to their charges and immersed in the culture of the zoo, in which they are the good guys. But many animals clearly show us that they do not enjoy captivity. When confined they rock, pull their hair and engage in other tics. Captive tigers pace back and forth, and in a 2014 study, researchers found that “the time devoted to pacing by a species in captivity is best predicted by the daily distances traveled in nature by the wild specimens.” It is almost as if they feel driven to patrol their territory, to hunt, to move, to walk a certain number of steps, as if they have a Fitbit in their brains. The researchers divided the odd behaviors of captive animals into two categories: “impulsive/compulsive behaviors,” including coprophagy (eating feces), regurgitation, self-biting and mutilation, exaggerated aggressiveness and infanticide, and “stereotypies,” which are endlessly repeated movements. Elephants bob their heads over and over. Chimps pull out their own hair. Giraffes endlessly flick their tongues. Bears and cats pace. Some studies have shown that as many as 80 percent of zoo carnivores, 64 percent of zoo chimps and 85 percent of zoo elephants have displayed compulsive behaviors or stereotypies. Elephants are particularly unhappy in zoos, given their great size, social nature and cognitive complexity. Many suffer from arthritis and other joint problems from standing on hard surfaces; elephants kept alone become desperately lonely; and all zoo elephants suffer mentally from being cooped up in tiny yards while their free-ranging cousins walk up to 50 miles a day. Zoo elephants tend to die young. At least 20 zoos in the United States have already ended their elephant exhibits in part because of ethical concerns about keeping the species captive.

Ms. Marris concludes her essay with some ways to reimagine and transform the zoo:

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