I'm beginning to be a Himalayan breeder. I've had one litter with a boy that sprays and I'm going to be selling him to someone who can accomodate that better than I. I've got mom, two other female kittens and just purchased a wonderful boy kitten. I wanted to raise them up all together and hope that he doesn't spray (his dad doesn't) But I've recently heard that if they live like 'brother and sister' they won't tend to mate....as if I may need to keep them separated...any thoughts? Thanks!