It may be that zoo animals are so well cared for they develop allergies as a side effect.
Meet Siku, the itchy polar bear: How allergies are affecting animals
marcos_townes April 4, 2025 News
polar bear
,zoo animals
https://www.bbc.com/future/article/20250401-the-polar-bear-with-itchy-skin-do-wild-animals-get-allergies