I hope that Chris is feeling better! Squirt had the opposite problem after he was neutered...the vet told me he would be sluggish and sleepy for at least 12 hours but it turned out that the anaesthesia wearing off turned him into Maniac Cat and he started zipping around the apartment, knocking over the stereo and trying to climb the walls. His pupils were completely dialated and he was breathing very loudly. It scared me quite a bit and I was just about to take him to the emergency vet when he started calming down. Anyway, long story just to say that cats are completely unpredictable..

Please give Chris a head scritch for me.