Male cats become fertile around 6-8 months old. At this time, the cats are sexually mature and will begin to show symptoms of estrus. However, at this time, the cat’s body organs are not fully developed, so it is not recommended to breed it too early.
It is generally recommended to wait until the cat comes into heat for the second time, which is about one and a half years old, before considering breeding. This can ensure that the male cat's body will not be excessively worn out, and the sperm quality will be relatively high, which can improve the success rate of breeding and the survival rate of offspring.