Cavia is a genus of small rodents commonly known as guinea pigs. They are native to the Andes mountains in South America and are popular as pets due to their friendly nature and social behavior. Cavia species are herbivorous, primarily feeding on grasses, fruits, and vegetables. There are several species within the Cavia genus, with the most well-known being the domestic guinea pig, Cavia porcellus. These animals have a variety of coat colors and patterns, and they require a spacious habitat, regular social interaction, and a balanced diet to thrive in captivity.