I have two hamsters, a boy and a girl, and the boy wont stop bleeding.......?

Separate them! Hamsters are solitary animals and don't necessarily get along with others. Take the little guy to the vet. He can help you better than we can. I hope he's better soon.

you must separate them or they will kill each other, syrians are solitary animals. which means they live alone.

First get the male to the vet or he may bleed to death, take the female too she should be checked over for additional injuries. Secondly get another cage for him if he makes it. They are not compatible by any means. I can't understand why anyone would let two animals fight and not do something about it. This was cruel to allow this to have kept happening. Have you tried light pressure using a gauze or unscented tissue like toilet paper on the injury area to slow down the bleeding so it has a chance to stop? Have you attempted to call a vet to see what to do until they open? Getting the bleeding to stop is the most important thing and keeping it stopped is next. My God I just realized you found him this morning like that and just now are attempting to get any kind of info on what to do. Why have you waited so long? I run a small animal rescue and I hope you understand why I'm so upset with what you have stated to everyone. I just took in a few nights ago a hamster where the owner wouldn't give her proper medical care and allowed her to suffer with a nipple infection for several days, then she called me to get advise on what to do. I said I'd take it to the vet, but she'd have to turn the female Syrian over to the rescue and she did. The hamster is now on her way to getting well. Bottom line your hamsters need medical attention and they need you to take them as soon as possible. They depend on you to keep them safe and well you didn't and now their hurt.

Take the one that is bleeding to the vet, and you should keep them in separate cages, as hamsters are solitary animals

don't let hem sleep together

i dont think a vet can do anything for a hamster. hamsters usually die if ythey are badly hurt or traumatized. you will get a huge vet bill for nothing. i speak from experience.