How old does your guinea pig start to mate with the male and at what age do females get pregnant?

Guinea pigs are sexually mature at a young age, and can begin breeding as early as 2-3 months old. However, it is generally recommended to wait until they are at least 4-5 months old before allowing them to mate, as this gives them time to reach full physical maturity and reduces the risk of complications during pregnancy.

Female guinea pigs (sows) have a gestation period of about 63-68 days, and can give birth to a litter of 1-6 pups (kits). They can become pregnant again soon after giving birth, but it is important to allow them time to rest and recover before breeding them again.