The guinea pig was first domesticated as early as 5000 BC for food, by tribes in the Andean region of South America (today's southern parts of Colombia, Ecuador, Peru and Bolivia).
Archaeological excavations in Peru and Ecuador have uncovered statues dating from around 500 BC to 5 ...
This is a large discrepancy, but we have to remember that not many specimens were excavated so far and it is challenging to assess the definitive conclusion.