the guinea pig, Cavia porcellus.

A rodent mammal (Cavia Cobaya) of the genus Cavia, originating in South America, but now widely distributed in a half-domesticated state.

the domesticated guinea pig, Cavia porcellus, or the Brazilian guinea pig, C. aperea, often supposed to be its wild ancestor.

a large Brazilian cavy, Kerodon rupestris, that inhabits dry, stony areas; also called moco.

The rock cavy of Brazil, Kerodon rupestris.