I have been trying to look into the age a stud should be used. I checked on the K.C page and all they said was the bitch had to be over 1 at the time of mating( which is a little young in my opinion). It says nothinhg about the age either young or old for a stud dog. I always thought the youngest a stud dog could be was 18 months and the oldest was 7 but I must have made it up lol I cant find anything related to stud dogs age. Does anyone know?