Biting and Scratching

[deshni]

My 12 week old has recently become a lot more aggressive in his play (although he was always generally aggressive). He is my only cat and is at home all day alone (although with his toys). He gets all my attention when I get home from work and we play and groom and all the rest and then we go to bed (he sleeps in my bed).

I'm sure you all know about kittens who jump on the bed like psychopaths and then get tired and start to fall asleep but my little one, when we go to bed, has started to (for lack of a better word) attack my arms. Whenever I reach out my arm to stroke him or hold him, he latches on with his paws (not scratching too hard) and starts biting my arm; quite hard but not hard enough to draw blood. At this time, he is in attack mode with his pupils dilated and I cannot get near him without him trying to bite me.

I know that it extremely likely that it for attention as he is lonely during the day and has excess energy and I do not mind at all staying up and playing but I don't want to encourage bad behavior of biting arms (as I don't want him to think it is okay to do to other people).

Any advice?