My cat, 8yrs old, was fine a few days ago, then quite suddenly he has become very anti-social, is hiding under the bed, in the closet or near the window. His meow is pained and doesn't like it when I touch him. He doesn't seem to be eating or drinking - and hasn't had any water in 24hrs it seems.
I'm going to take him to the vet but would be grateful if anyone could help figure out what's wrong with him.
Update:
He received pain medication, a water injection and medication that encourages appetite. The drugs have now worn off and he seems somewhat back to normal. I'm awaiting news of his urine and blood test.
It's still a bit of a mystery.