This has happened twice so far to Bear. He will be sound asleep and something startles him and he jumps up and its like his one front leg is asleep. He will be trying to walk and the leg is bending like a wet noodle. It is really quite alarming to see, it bends in very unnatural directions. I hurry and stop him from walking any further and in a few moments, the leg is fine and he can walk. I guess its just asleep and numb??