How old can a dog have puppies?

A ten year old unspayed female dog can indeed get pregnant and have puppies. If this is her first pregnancy, it could be relatively dangerous for her health, even if she was in good health going into the pregnancy. read more

A female dog might be physically capable of producing a litter of puppies as early as 5 months and generally reaches sexual maturity by 15 months. The age at which a dog goes into its first heat can vary depending on the breed. read more

Female dogs experience their first reproductive cycle, or heat, when they are between six months and two years old, explains WebVet. The female dog can become pregnant during her first heat. Whitney Veterinary Hospital recommends letting a dog go through at least one heat before becoming pregnant. read more