No! They will feel threatened and when you intorudce the new female, the other female will think she is invading her territory and attack her. If you do that it is most likely that one will die :(
no, they will kill each other. hamsters are very territorial.
Not neccessarily immediately but yes they will mate but a pregnancy will only happen if the female is 'ready'. This question should be in a different category.
Of courswe!
you put a male and female together and you wait.
sure! as long as they aren't syrian hamsters, they will get along nicely
You put a male and a female together. Take the male out after a few hours, and your female will have babies.
yes,they can play together, but don't to very much touch/poke them.
bro what i guess
You could, but I sugest you don't because hamsters are solitary animals and they might hurt each other.
SYRIAN HAMSTERS SHOULD NOT BE KEPT TOGETHER
Hamsters don't really like living with each other, as sad as it sounds, it's true. Gerbils on the other hand like to live together. Now, if you want your hamsters to reproduce (make babies), then you would put a male with a female. If you don't want them to reproduce, female and female is best.
No. Species don't inter breed