Family Hydrochoeridae refers to a taxonomic family of herbivorous rodents commonly known as capybaras. Synonyms for this family include Hydrochoreidae, Hydrochoreinae, and Hydrochoerinae. Capybaras are native to South America and are the largest rodents in the world, weighing up to 66 kilograms. They are social animals that live in family groups and are excellent swimmers. In the wild, they feed on grasses, aquatic plants, and bark. Capybaras are becoming increasingly popular as pets, but it is important to note that they require special care and attention as they cannot be domesticated. They are also protected by law in their native habitats.