Capybaras are the world's largest rodents and are intensely social animals. Their welfare in captivity requires appropriate group sizes and semi-aquatic habitat.
Capybara welfare in captivity centers on group size and water access. Solitary or paired capybaras show chronic stress, reduced activity, and abnormal behaviors. Groups of five or more provide appropriate social complexity. Water access must be deep enough for swimming and full body immersion — shallow pools that only allow wading fail to meet behavioral needs for thermoregulation and social bathing. Walkthrough exhibits where visitors enter capybara areas require careful management to ensure animals have retreat zones away from human contact.