This is a first for me. I got a month's worth of mice for my animals and they didn't look terrible when I got them. There was no blood on them and the limbs were intact. It wasn't even obvious when they were frozen, but as I started to thaw a few out for feeding I noticed they all had disgusting abscess that goes straight through the body cavity. Blood and guts were everywhere and they smelled terrible. Needless to say, I didn't feed them off. But I did thaw out the rest of my package and out of 15 mice, 9 of them had this. And it's not like they were all the same age either. Out of them, I had fuzzies, hoppers, and small adults. This abscess was present in all of them. I threw out all the bad ones and I'm changing where I get my feeders, but does anyone have an idea what's going on? Because I don't.