Took cat to vet and when came home and he got out of crate he started shaking. Did it three times then stopped. Called vet and he said could be from alcohol on belly ad he got cold or could be from heart.. Keep an eye out. Anyone ever see this?
Was the shaking incredibly intense like your cat could be having a seizure? Or more subdued like a scared pet during a thunderstorm? Your first post was about 4 hours ago...Is he still shaking?
I would just keep an eye on him tonight and make sure he isn't acting strange and make sure he eats normally. Eating is very important and many sick cats let you know they are sick by not eating.
Sorry I don't have any definitive answers for you.