I raise rats, mice, and dwarf hamsters...and to be honest i have grown to dislike my hamsters....when i got my male and female i loved them...especially when she had her first litter of babies.....i learned the hard way that you CANNOT keep all of them together...the babies killed thier mother and father and then the babies started killing and eating each other....even after i separated them and put them 2 to a cage....one would attack the other...we are talking about siblings that at been together since birth....I just took one more dead one out of a cage and decided the ones I have left are going to the pet store...that is if she would take the ones that have had thier ears chewed off by the others...I have raised other types of hamsters and NEVER had this problem....and no...i haven't been starving them ...so they aren't eating each other for lack of food.....if anything i have overfed them....I think i will stick to my rats....never a fight and the mothers are AWESOME mothers....not a cannabalised baby yet