Rowdy is losing his mind!!!!

by Shannon
(Canada)

I have 2 nuetered males,who are 2 and a half years old cats. Rowdy is a flame-point siamese, and Puck a black and white. I recently got a 7 week old kitten and Rowdy is losing his mind hides, hisses and growls at the new kitten which I understand is to be expected, but he is also behaving agressivly towards Puck whodoesnt seem to have a problem with the kitten. Is this normal behaivor?