I just got an 8 week old BT puppy, and he twitches (or shakes) sometimes. My vet said this is normal, and it just means he is either cold, nervous, or excited. I notice that he twitches and yelps sometimes in his sleep, which I think is because he is dreaming. If you read a lot of these posts it appears that this is a common trait among BTs. I would ask your vet to be sure.
Jun 01, 2010
Betwitched by: Mary
It could be several things...maybe fleas or an itch. It could be more serious like epilepsy. Better see a vet to rule out the worst cases.