have your male done any shows? any ribbons or championships? my stud did not studded anyone until he champion, he was already 5 years old when he stud his first litter, same with my girl she had 5 blue ribbons under her belt, when she was bred for the first time she was 1.5 years old. Now to the pre breeding and health tests, you need to reasearch the breed and have breed specific tests done to make sure your pair is FREE of genetic illness. My son is a Vet Tech and I get a discount, and still I pay BIG $$$ for test, pre natal care and all the add ons you need for breeding. My stud used to mark, now not so much but I heard HORROR stories about males marking. Harry boy will mark if another intact male comes to my house, other than that is is my lover boy. IF your boy has all his championships and you can deal with a hormonal male, .. then you are on your way, other than that I will agree with the rest of the members in get him neuter and love him as a pet and save yourself a big headache..