Hi group. We are having a problem with our 9 month old cat (Sunny from Cat of the Day on May 15th), jumping on our 4 year old persian female. He tries to bite her neck, jump on her or chases her all over the house when we are not there. We know he chases her because we see chairs pushed out from the table and her hair (she is all white, very long haired) is all over the house. Any ideas on how to keep him from attacking her. i think he is trying to play but he does seem a little territorial. he sometimes won't let her into the litter box, we have to stand guard for her or lock him in the bedroom. Any ideas?