How do you tell if your hamster is male or female?

Answer 1

You cant tell when they are babies but i hope this website helps its what i used. http://www.hamsterific.com/HamsterUniversity/SexingHamsters.html

im a breeder now and it still comes in handy some times you just cant tell cuz males sometimes take longer to develop fully then females.

Answer 2

When they're babies, hard to tell. The greater the distance between anus and sexual opening tells you it's a male.

But as they get older, males develop a very obvious sack and they have a sharper rear end.