I would have his thyroid tested. Increased activity level and change in normal activity level is a common first sign of hyperthyroidism in cats.Originally Posted by SiameseStacey
He takes one look at us and goes tearing through the house the other way and hides. I don't understand it? Nothing has happened. No strange people have visited. He didn't get into a fight with anyone else in the house. He's not afraid of the other cats. He's just a paranoid, scared, mess.
Could this be vaccine related? There's nothing else that I can think of. It's so disturbing to me because we had so much fun with him on a daily basis. I'm worried he'll never come back to us. Uhh, this is awful.