Capybaras are the world's largest rodents and highly social semiaquatic animals whose welfare in zoos depends on water access, large social groups, and appropriate grazing habitat.
Capybara welfare in captivity requires managing the intersection of semiaquatic habitat needs and complex social requirements. Single pair or solo housing fails capybara social needs fundamentally, as these animals evolved in large groups with complex social dynamics. Water access is a non-negotiable welfare requirement, as capybaras without swimming opportunity cannot thermoregulate effectively and cannot express the aquatic foraging behavior that is central to their natural activity pattern. Grazing opportunity on appropriate vegetation is important for both digestive and behavioral welfare. The growing popularity of capybaras in zoo exhibits has sometimes led to acquisition without adequate planning for their actual welfare needs. The best capybara exhibits combine large water features with extensive grazing areas and accommodate social groups of appropriate size.