injured

Holstein cow has had this lump on her leg for years. When You remove it, it comes back. The vet came in and didn’t know what it was. Anyone have any ideas? Check out the picture. Thanks

My cat was caught with a wild bunny. It's a baby, but alert, eyes open, ears up. The skin was ripped away from the back of its leg, I can see the muscles underneath. I am not sure if it is eating/drinking or not. I gave it pellets and mixed hay that I have for my rabbits, along with some clovers...