My cat came home a few weeks ago with a gash on her back right leg. She favored it for a few days, and the wound does not appear infected. We are able to touch her leg near the wound, and she doesn't put up too much fuss, and she hasn't changed her habits, in terms of eating or playing. Just today she started to favor it again, but the wound still looks clean. Should I take her to the vet, or just let time heal it?