In my experience, it is quite unusual for a cat breeder to publish a photograph of the breeding stud cat in such an ostentatious way!
It’s a reminder that the domestic cat does have balls. As most male domestic cats have had their testes removed during the neutering operation we rarely see them.
I will presume that this is this cattery’s breeding male or one of them. The breeder is based in the Philippines and they say that they import, I’m guessing, breeding cats from abroad and they create their own as well. They are called: Purramore Cattery.
If you click the link above the photograph you will be taken to a full page on this cat breed.