I took my male, age 5, neutered cat to the vet today, and he got antibiotics for a UTI, dewormer for tapeworms, and a 3 year rabies vaccine. Tonight he is twitching a lot in his sleep, probably dreaming, but periodically wakes up and gives a strange, almost confused/scared sounding meow and then tries to bite me. This is very unusual behavior for him, he is normally a sweetheart. Is this possibly a reaction to the vaccine or one of the other medicines he was given earlier today?