Why do my 2 female hamsters keep fighting w/ my smallest female hamster?
I got two female Siberian (Campbell) hamsters a few months ago. I had them mated with my friend's male Siberian Hamster. After a few weeks both of them had babies. Of course I separated them until such time that their babies were old and big enough for all of them to be in the same cage. The only problem is I noticed that the two mommy hamsters keep picking on the smallest, dark colored female hamster (which is one of their children). I find it so weird since there are actually five of them in the cage and the two moms only seem to fight with that one hamster. Every time I hear squeaking I rush to check on them and often find that the biggest (most fat) mommy hamster is fighting with the small dark one. I always see the small dark one lying on its back with its teeth showing while the fat mommy hamster tries to fight with it. I even caught the fat mommy hamster just sitting on top of the small dark hamster! I already tried separating the two mommy hamsters for a few days then putting them all back in the same cage to see if things would be different. This was the only time I was able to see the small dark hamster come out of its hiding place to play and walk around the cage. As soon as I put them back they started picking on the small one again. Help! Why is it that they only pick on this small dark hamster and not the other ones? I checked and it doesn't seem to have any serious injuries nor is it bleeding. What should I do?