She doesn't want to mate, she hasn't been properly introduced to the male. Presumably you aren't trying to keep them together full time, they are doomed to fight in that case, hamsters are solitary animals.
Successful breeding tips:
She should be able to smell him for about a week before she meets him. Let him walk around the outside of her cage, put her in his empty cage for a few hours, Let him into her empty cage for a few hours, etc. Females come into season about every 4 days. She'll be ready for breeding when she flattens her back and presents her bottom when being stroked.
At that point, let her into his cage. If they disagree, bite or fight at all, then take her out and try again the next night.
Sometimes she accepts him more readily if he goes into her cage.
Only leave them together for a few days, assuming they don't start fighting before that.
Gestation is only 16 days, usually. Be very kind and gentle when handling the mother between mating and the birth. Make sure you clean the cage well about 14 days after breeding because you need to not clean it again until the babies are at least 2 weeks old. Do not disturb the mother in any way until the babies are at least 10 days old.
Successful breeding tips:
She should be able to smell him for about a week before she meets him. Let him walk around the outside of her cage, put her in his empty cage for a few hours, Let him into her empty cage for a few hours, etc. Females come into season about every 4 days. She'll be ready for breeding when she flattens her back and presents her bottom when being stroked.
At that point, let her into his cage. If they disagree, bite or fight at all, then take her out and try again the next night.
Sometimes she accepts him more readily if he goes into her cage.
Only leave them together for a few days, assuming they don't start fighting before that.
Gestation is only 16 days, usually. Be very kind and gentle when handling the mother between mating and the birth. Make sure you clean the cage well about 14 days after breeding because you need to not clean it again until the babies are at least 2 weeks old. Do not disturb the mother in any way until the babies are at least 10 days old.
