Posted : 6/12/2006 8:59:21 PM
It could be seizure related. Does she appear to shake anywhere else or is it just her lower jaw?
When we first adopted Murphy from the canine rescue, he would sit with us and he would 'shiver' like he was cold. We would be sitting on the couch, nice and snuggly, and he would do this. It puzzled me because it was nice and warm. Then about a month after we adopted him he had his first full blown seizure...... and the vet and I concluded that those little 'shiver' episodes were mini seizures or Murphy feeling one coming on.