I will of course be phoning the Vet in the morning but would like to pick your brains. Shut B upstairs in his safe place with his midnight snack whilst I went back down to lock / tidy up etc. When I went back up he was in his usual spot on the landing and had eaten his food. I stroked him and he was purring and followed me into the bathroom, it was then I noticed that there is a patch about a cm in diameter just above his eye where the fur has gone and there is just pink skin. There is no blood on his coat and no blood where the skin is. I picked him up and made a fuss of him and he let me touch it with a piece of wet cotton wool. It's as though there was never any fur there as just behind it the fur is the correct length. I just can't understand what has happened. Any ideas gratefully received.