My daughter wants to know?

Four weeks, any younger than this is too young and can cause developmental problems, any older and you run the risk of them breeding. I am going to include a site with pics for sexing.

http://www.hamsterific.com/HamsterUniversity/Sexin...

http://www.hamsterhideout.com/sexing.html

6 weeks like all other animals if you don't separate the males from the females the males could be killed by the females . I had a brother and sister in the same cage and the female killed the male

males at 3 1/2 wks and you can keep the girls together until about 8wks, but i seperate mine at 3 1/2wks ALL OF THEM and then they are up for sale at 5wks at the hamster shows... if you want any additional info emai me on jeni_croftham@btinternet.com

CHEAHWAY- we have colonies of dwarves and chinese an you do not need to seperate the males.. i have had 10yrs experience...

by two weeks. www.hamsterrific.com make sure that your male and females are seperated because they will immediatly breed again. We have four hamsters, and have done lots of research on breeding. The website i gave you should answer your questions.

dwarfs can reproduce a few hours after giving birth. So you have to separate the male and female.

After they are eaasily moving around and they can eat food and drink water on their own. Basically when they don't really need milk from the mom anymore. I'd try 6 weeks.

when the mother dies..and then the hamster goes to the pet store?

Generally speaking, dwarf and syrian babies should be weaned at 3 - 4 weeks of age. The babies are able to reproduce at one month so seperate the boys from the girls, please, for their sake and yours.