How old is too for a dog to have puppies?

The ideal age range for a dog to have puppies is between 2 and 5 years old. Dogs younger than 2 years old are still considered sexually immature and may not be able to produce healthy puppies. Dogs older than 5 years old may experience an increased risk of complications during pregnancy and childbirth. Additionally, the fertility of dogs naturally declines with age, so older dogs may be less likely to conceive or carry puppies to term. However, there may be specific breeding recommendations or considerations based on the size, breed, and individual health of the dog, so consulting with a veterinarian or reputable breeder is always advisable when planning dog breeding.