hamsters have about 12 To about 20 Babys in one litter. When your hamster is pragnet let your hamster rest. When your hamster dose has the babys "CLEAN" you're hamster cage 2 time a week. When you "Clean" Your hamster cage take out all the babys and put them on a blanket, But 1 thing wear a glove when you clean the cage out. Make a soft spot where you can put the baby new born hamster to sleep . When you clean your hamster cage clean it 30 mins after your hamster has the babies!!