What is the most common disease in zoos?

Mammalian tuberculosis Tuberculosis in Various Animals remains a disease of major concern in zoos because of the zoonotic nature of the pathogen. It is most often found on routine screening rather than as clinical cases in primates, hoofstock, and elephants.



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Animals in captivity exhibit unnatural behaviours such as apathy, aggression, and stalled maturation (prolonged infantile behaviour). They also carry out a wide spectrum of stress behaviours, ranging from pacing to self-mutilation and beyond. These are not behaviours noted in the wild.

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Animal abuse is widespread in 75% of zoo and aquarium facilities. 96% of elephants in entertainment facilities are treated poorly. Polar bears have a million times less space in zoos. Only 18% of captive animals are endangered.

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Captivity suppresses the natural instincts of wild animals. Animals suffer permanent frustration because they have no freedom of choice and cannot behave as they would do in their natural environment. This leads to a tendency toward genetic, physical and behavioural degeneration.

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What Are Some Pros and Cons of Zoos?
  • Animals Often Only Have Quite Limited Space. ...
  • Zoos Are Crowded. ...
  • Animals Are Trapped in Unnatural Environments. ...
  • Confinement May Alter the Behavior of Animals. ...
  • 'Surplus' Animals Can Be Killed. ...
  • Animals Are Often Mistreated. ...
  • Animals Don't Like Being Visited. ...
  • Animals Struggle to Form Connections.


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Zoo veterinarians can give animals routine vaccinations and physical exams to keep them healthy. Animals who are treated for a disease are kept in isolation to reduce exposure to other animals. In addition, animals with injuries are kept separate so they can heal properly.

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