Capybaras — the world's largest rodents — are increasingly popular in zoo collections, with their welfare depending on appropriate social groups, water access, and grazing opportunities.
Capybara welfare in captivity depends critically on three factors: social group integrity, water access, and grazing opportunity. Isolated capybaras deteriorate rapidly — they evolved as highly social animals in which group membership is fundamental to normal behaviour and stress management. Water access is not optional enrichment but physiological necessity; capybaras without swimming and wallowing opportunities experience chronic thermoregulatory stress. In petting zoo contexts where capybaras are constantly approached by unfamiliar humans, stress levels can be chronically elevated — prey animal stress responses conflict with the desired human interaction. Best-practice facilities provide appropriate group sizes, deep pools, extensive grazing areas, and controlled human interaction.