Sorry I'm replying so late to this message. Hope you've figured things out with the shaking and finding a new vet. Artemis is a big shaker--every time she's scared: thunder storms and vet, but especially beeping sounds. Any beeping sound: computers, cameras, trucks backing up. Check all your smoke detectors. If there's a low battery, they make a chirping sound. I had one in the basement and didn't hear it, but Artemis was out of sorts until I figured it out.