Bleeding Worm

My daughter was playing out in the garden earlier and comes running in:"Mama, Mama the worm is 

bleeding ." She seemed really upset about it so I went to have a look what she was on about it, guess what? It wasn't a worm but the guts of a small animal like a mouse or something.

I'm used to my cat who will bring back dead mice and small birds but she never tears them apart - there is usually one bite to the neck. The same however can't be said for my next door neighbour's cat who seem to enjoy bringing my cat animal parts which is rather gross when you come down to find animal parts in the conservatory. Looks like I'm going to have to check the garden before letting the kids play in the garden from now on.