Looks like maybe they caught a nail in something and tore it out or broke it? My cat decided to sneak into my bedroom last month, found her way into a closet and somehow got herself stuck INSIDE a suitcase. I was lucky to hear her cries, get her out and then deal with all the little bloody cat footprints, because she tore her nail.
If its not actively bleeding, I would say keep an eye on it, make sure its healing, but at first sign of an infection, get her to the vet.
We washed his foot and cleaned it very well. We're going to keep an eye on it and see if it gets worse. He is not acting like it hurts him at all. So I think he's going to be fine
