I have a 7 month old Ball Python, and he has never had a problem eatting since I started giving him live mice. However, today he constricted the mouse perfectly, and the mouse seemed dead but I noticed my snake twitching during the swallowing process and noticed that the mouse's legs were still kicking as he was going down. HE WAS STILL ALIVE! My BP got him down no problem, but I was really worried....Anything like this ever happen to anyone??