Guinea pig | Smithsonian’s National Zoo and Conservation Biology Institute https://nationalzoo.si.edu/animals/guinea-pig
Guinea pigs are rodents that were first domesticated in 5,000 B.C. – domesticated species, Cavia porcellus, is most likely derived from the Andean Cavia tschudii (or montane guinea
Guinea pigs have no tails. The length, texture and color of their fur varies by breed.