Is Phantom Pain a possibility? We didn't deal with that so hopefully someone else will chime in!

Sometimes I think Murphy holds back because he's afraid of pain.  Like, before his surgery, all 3 dogs would play tug-of-war and wrestle.  But before his surgery when he would be in pain if he yelped out, Max sort of freaked out and would go at Murphy.  It got a little bit bad at times, to the point that we had to put a muzzle on Max when we'd put the dogs outside.  We could tell that Max was upset by the whole thing because he would be trembling, but it's like something just came over him.  It's been 2 1/2 years since Murphy's surgery and most of the time when the dogs play, it's just Cassie & Max tugging & Murphy barking at the 2 of them.  Once in awhile Murphy will tug, but not often.  However, outside is a whole other matter!  When it comes to chasing after squirrels or that stupid ground hog - Murphy can run just as fast as the other 2, jumps up the tree, will try to dig under the wood pile if he hears mice...no fear of hurting his good leg that then!  lol  So maybe it's just an anticipatory yelp?

Donna