My cat is acting really strange and not himself. He's been really lethargic, and just lying and sleeping most of the day. Normally he is a very vocal cat and his meows are always drawn out, but when he meows now it's very loud and short. He is very obviously uncomfortable in some way, and I am taking him to the vet tomorrow, but I would like some ideas of what it could be. He is usually a very affectionate and snuggly cat, but today he just does not seem to care either way if you pet him or not.
Any ideas on what could be wrong?
Any ideas on what could be wrong?