I too would wait a few days and keep him limited on it if you can if he doesn't appear to be in pain. Wilson has done this, and my other dog Ace had done this before where they did something and wouldn't put pressure or limited weight on their leg and then in a couple of days they were just fine (like a sprain). When Ace would do it it was usually from running. I would massage his leg and that seemed to really help, sometimes almost instantly. I hope Cutty is feeling better real fast!