WEll, he weighs 3.53kg, so not too thin, but the vet did say he felt on the thin side - we are to give him a bit longer, and if no sign of putting weight on, he might have to be bloodtested as he was an unneutered stray - but the vet doesn't feel he is showing any clinical signs at the moment. We have wormed him again in case that was why, although all his poos are normal, and despite him chewing his food oddly, there is nothing wrong with his teeth. He has been allowed out of his room for the first time today, but it didn't last long!! When he was in the bathroom, he was fine, I put him in the cat room on Tues, and he started yowling a bit when I left him. Let him out of the room tonight and he has just walked round howling intermittently for an hour, so I have put him back in his room now, and he is quiet!! Dont know what is up with him - he was sat on my bed yowling and Molly was twice as loud as he was, and he just sat there looking at her - I moved him 3 times!!