6 of my cats are barely past kitten age, yet several are starting to mate...one cat mates constantly (is that mormal for him?), and the others watch and try to get involved...I am worrried because they are so young and were part of a 8 litter of kittens (ouch for the mother) and several are runts...if they have kittens will it hurt them or the kittens? is it possible to get them to STOP mating somehow? I wish someone would invent cat hormone shots (like our pills to prevent pregnancy)...The problem is..My grandma wants to take the females to the pound and let them(and most likely they are preg)be murdered. My only choice is to try to put them in the paper and hope they are taken care of....