Three legged dogs for hunting!?!

He holds it up or it just stays up I can't really pin point that one, and from time to time I think I see him moving the foot but when I stop to look it doesn't happen again. No there were no X-rays done. The loss of muscle is on the shoulder it's now nothing but skin over bone that's how it feels. He doesn't act like it hurts him what so ever he bounces around and raises hell when we leave without him. I have pinched the toes and he will wince. I don't want to cull him what's so ever but I'm trying to look at it from a what's fair to him standpoint. I have not asked the vet about amputation yet and nor has he sugested it as an option. But that was 2 weeks ago. I appreciate yalls feed back.