How often does guinea pigs give birth?

Guinea pigs have a short gestation period, typically around 59-72 days. After their first pregnancy, they can go into labor every few weeks, with each litter averaging around 1-8 babies. Guinea pigs can give birth to multiple litters per year, with some females producing as many as 5 litters in a year. It's important to note that female guinea pigs can become pregnant again while they are still nursing a current litter, so it is crucial to separate males and females unless breeding is intended.