Just thought I'd ask it here:
What is it that drives mice to cannibalism? In the last few weeks, I've encountered several stories of otherwise happy, well-housed and well-fed mice that seemed to turn on one of their cagemates for no reason. And not just killing the other mouse, but eating it as well.
I did find out that the mice attacked tended to be the smallest, but I don't know if that matters much.
Anyone have any ideas?