Vega was playing with my neighbors husky and got hurt. It wasn't intentional, Vega was trying to jump over something and missed and he was limping slightly for about 4 days or so and then he stopped. Everyone at the grooming shop was giving him extra attention and love so I think he did kind of link it to the limping. I've noticed now when I correct him for something or while eating food i'll tell him "no" that it's not his he starts to limp, lol! They sure are clever!
He's fine now though, he's back to his jumpy and bonucy self.