the.com/cavy

means A rodent of the family Caviidae — most commonly the guinea pig — used especially in scientific or formal contexts.

from From the genus name Cavia, which most etymologists trace back through Portuguese or French to an indigenous South American word (possibly Tupi 'saurigue' or a related term filtered through Galibi) for the animal — guinea pigs are native to the Andes, not Guinea, and were likely shipped to Europe via trade routes that made 'Guinea' and 'New Guinea' casual catch-alls for 'somewhere foreign and far.' The scientific name sidesteps that geographic confusion entirely, which is rather the point of using it.