Evil mice, or doing the right thing?

[J.J.]

Ok, that is the question I have been trying to answer, but I cant! Ok, I just recently noticed that my mice had more mice. Well, we had 2 females in a cage and 1 male. I fed the male to my snake a lil while before that. The male was a dark colour and there was one female with the same colour, and the babies are that colour, so i am guessing she is the mother????? Anyways , both females seemed to be taking good care of the babies, so I decided to just keep them both in the cage with the babies. Well I heard a large screeching noise in the cage and I look over and saw blood everywhere. The other female ( not the mother) had seriously bitten one of the babies. So i took her out and fed her to my snake! LMAO! anyways. so then I just took the other mom out and cleaned up the blood WITHOUT touch the babies and i was wearing rubber gloves and and cleaned out the blood and i left the baby that was bitten in the cage cuz she seemed to be doing ok. I put the mom back in , la dee da dee da. And then i went to check up on the babies and i noticed that there was only two i could see and only one was moving. So i again put on the rubber gloves and took out the mom and look under the little plastic house they were under. Then one that was bitten early was buried under the bedding, so I am guessing it died of suffication or internal injuries. And I noticed that the reason only one mouse was moving is because the other had been eaten into the gut. So it was kind of eaten alive. Well so I threw away the dead mice and put the evil mom back in the cage. They seem to be doing ok now. but why the hell did those mice kill the babies??? Was is because they knew they were sick so they thought they should kill them now and maybe get a good meal?OR WHAT?!?!??! I dunno, but PLEASE TELL ME WHY THEY DID THIS! Thank you!