How long do guinea pigs stay pregnant?

Guinea pig pups eat solid food from birth, but they also get nutrition from their mother. About 5-8 days after giving birth, the mother begins lactating for her pups, but they don't rely on her for long. read more

Realise how easily guinea pigs can become pregnant. Male guinea pigs (boars) can become sexually mature as early as three weeks of age. Female guinea pigs (sows) can become sexually mature as early as four weeks of age. It is entirely possible for a male pup to impregnate its mother or sisters. read more

The guinea pig pregnancy duration is long - approximately 59- 72 days (the average is 65 days) - the duration decreases with litter size (i.e. the smaller the litter, the longer the pregnancy). The mean length of pregnancy for a litter of 1 guinea pig is 70 days; for a litter of 6 guinea pigs its 67 days. read more