I think that a female dog should be retired by 8 years old at the latest, optimally around 5 years of age. Every dog is different, so you should talk with your vet about your dog’s health and age. Male Dog Breeding Age Recommendation. A male dog, (stud) can go through puberty between 5 and 12 months of age. read more
If you don't properly take care of your female, her puppies could die and she could even die, too. It's very important to know what you're doing. Breeding dogs isn't easy and a pregnant female dog should be treated just like a pregnant human. Don't take any chances. As for when to breed your female, you need to wait until at least her second heat. read more