My cat casper has always brought home voles/rabbits because we live near a field. But lately he has been eating them (dont read on if you have a soft stomach) and especially theyre heads and eyeballs. He is getting old now, about 11-12, we have consulted a vet about it and they didnt know why he would be behaving like this. I dont mind cleaning them up but he is catching one a day and about 5 minutes ago he started eating one infront of me, and wouldnt let go of the rabbit. This cant be normal, and because of it my parents are thinking of putting him down. Can anybody give any reasons why he may be doing this and anyway to stop it?