so i have a male adult cat that is approximately a year old. i have been reading articles about spaying/neutering your cat and the all say that the should have it done around 6 months or when they mature. well my wife decided to suprise me and when i got home from work we had aquired to female kittens. long story short i dont want any more kittens and was wondering if the adult cat being older if that would be a problem to get him fixed. also the older cat seems to be playing a bit rough with one of the kittens almost like hes attacking her. alot of the time the adult will just sit from a distance and watch them play. what type of behavior should we see and if you have any comments or suggestions, that would be greatlyy appreciated.