Capybaras are the world's largest rodents and semi-aquatic specialists whose welfare in both wild and captive settings depends on access to water for thermoregulation and behavioral expression.
Capybara welfare encompasses wild populations navigating landscapes increasingly dominated by human activity. Urban capybaras that colonize residential areas face lethal control when conflicts arise, while wild populations in agricultural areas face habitat degradation and hunting. The tick-borne disease concern that has driven urban capybara culls reflects public health anxiety rather than a straightforward welfare calculation — capybaras serve as hosts for ticks carrying spotted fever, but their role in transmission dynamics is complex. In captivity, water access is the non-negotiable welfare requirement: capybaras without swimming opportunity show elevated stress and abnormal behavior. The social nature of capybaras means that single individuals in captivity face social deprivation — group keeping with appropriate water provision represents the minimum welfare standard for captive capybara management.