How many babies does a hamster usually have?

A hamster usually gives birth to 1-12 pups, most commonly around 5-8. After mating, pregnancy lasts about 17-25 days, and an ultrasound at the vet can confirm the number. If a litter is very large, some pups may be weak with lower survival rates, so watch the newborns closely and keep the environment at 20-30 C.