Tina, Toby did the same thing on Sunday. Twisted the front right leg when he was chasing his ball. He made a pretty big fuss, but recovered rapidly....Surely they wouldn't play the sympathy factor????? Anyway, I had him to the dr. on Monday for his eye and she looked at the leg - nothing to be found. I think they are just so awkward as pups that they twist things a lot. Boone may have mistakenly thought that you punished him for jumping up and thus he was hurt emotionally as well. You are right to just keep a close watch on it. Toby really can be dramatic about some things though.