I'm going to share, but it is not my intention to scare you. My yorkie had the same symptoms. I thought it was pain, and gave him a pain pill. it got worse!!!! He was crying, shaking, wouldn't sit still, and on and on. Turns out, my baby is in the small percentage of pups that do not tolerate pain meds well. I stopped giving hem to him and he got better. Same thing happened when he had his dental a few months ago. They gave him something mild for the discomfort, and he was nuts all night. Neither of us slept. As soon as it wore off, I had my happy go lucky pup back. That's 2 different situations, 2 years apart, same reaction. Kaji just doesn't do well with pain medication.