My cat is either poisoned or very ill. I'm hoping for poisoned, because she's not dead, and that means she'll probably be okay. The vet says it could be any of dozens of problems.
She has violent tremors in her legs, and head, and wavers between 'mostly okay' and 'two steps and her legs fall over'. Earlier, she was having 'fits' where she lay on her side and stared, and shook.
It's scary watching your cat like that.