Massacring millions of domestic dogs every year is cruel and ruthless. Kennel clubs are an authority on dogs and 12 litters per female are not accepted if you consider that at 7 years old a dog becomes a Senior. Akc allows the registration of 12 liters per female. It is possible for a female dog to have a maximum of three litters per year.
Bitches can go into heat between six and 12 months of age and do not go into menopause. Assuming a dog lives to the average age of 11, a dog could have up to 30 litters. However, this number is highly unlikely, as older dogs and overbred dogs are more likely to lose litters due to stress and medical problems. Theoretically speaking, female dogs can have up to 3 litters in a year.
Assuming the average litter size is 7 puppies, a dog and her babies can have up to 67,000 new puppies in just 6 years. On the other hand, theoretically speaking, males can breed an unlimited number of litters. The American Kennel Club will not accept registrations for litters produced by dogs older than 12 or younger than eight months of age. They also maintain the number of litters throughout a dog's life at a level that will keep her and her puppies healthy.
The inspector will also review your records, so you'll need to keep a record of each litter you've raised, as well as individual records for each adult dog. In fact, one of my most winning dogs came out of that fifth litter of my foundation dog, and it was a repeat reproduction of a really special stallion. Just because males are able to mate all the time does not mean that they must have countless numbers of litters. After this age, you are more likely to have trouble giving birth, which can result in an unhealthy litter or the absence of litter due to a miscarriage.
It is recommended to keep the number of litters for a female dog three to four in total, and a good breeder will distribute the litters throughout the optimal breeding years of the female to keep the mother and her cubs healthy. For the same reasons, females should not be raised after producing 4 litters or after reaching the age of 8.