We were both on the couch and he was curled up on a blanket. He stirred a little and then he just started screaming. He held up one of his back legs and wouldn't put wait on it. He screamed for about 10 seconds and then hoped off the couch and held up his leg and wouldn't move. I picked him up and checked his foot to see if something caught caught in it, but it seemed fine. After another couple minutes he put his leg back down and is walking around fine. Could it have been a leg cramp or something? It freaked me out!