I have a 7 month old male cat. Generally he is ok with typical crazy kitten type behaviour. I am worried about his aggression though. He gets riled pretty quickly and will bite and scratch and it really hurts! He will do this suddenly when he looks quite calm. There does not seem to be any pattern with it. he does not hiss or spit and there is no warning that he is about to attack. We play with him alot but I am now beginning to wonder if the play was a bit too rough in the early days. I know my husband would really mess about with him. He has not had his knackers off yet. Any thoughts on this and what to do?