Do you want more female puppies in a litter? Could more dog breeders in the future use technology to predict the sex of the puppies in a litter? In animals, the sex of the pup is determined by the father, while the number of fertilized eggs laid by the mother defines the size of the litter.

Some sires are known for siring females, as we have all heard. Instead of the stud dogs, is it possible for breeders to control the sex of their puppies?

To predict the sexes of our litters, breeders have explored various techniques. Numerous approaches have been supported by folklore, cultural customs, the right moment, and even research into actual births.

Many believe that having puppies early will result in bitches. I have acquaintances who are breeders that have had success with this approach. The fact that most males are born during the “ideal fertile” period of breeding, as shown by progesterone testing, may serve as another justification for “breeding early to acquire bitches.”

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Breeders that have utilized the acid/alkaline approach to predict the sexes believe that the pH level in the buck’s vagina creates the best environment for either sex to survive and that an acidic environment will result in females. In contrast, an alkaline one will result in males.

Female Puppies In A Litter: What Determines the Sex of a Puppy?

A puppy’s father determines its sex the majority of the time. The genetic material for a man or female is either carried by sperm, and the sperm’s chromosomal makeup determines this.

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DNA fragments make up chromosomes. The X and Y chromosomes are the ones that determine gender, and each person is born with at least one X chromosome. Although females have two X chromosomes, males also have a Y chromosome.

There is nothing you can do to encourage a male with X chromosomes to create more sperm. Similarly, there is precious little a dog can do to produce more female puppies in a litter.

However, according to scientific research, a mother’s body generates more female offspring when it is more acidic. Male sperm is destroyed by acidity, whereas female sperm can fertilize the mother.

Some breeders swab the mother’s vagina with vinegar before breeding to boost the mother’s acidity. It’s unclear if this only kills any potential males that would have been born or if it also generates more females.

For instance, if this is attempted and the mother has six female offspring, did the vinegar swab cause her to have more offspring, or would she have had six regardless? Did the swab stop the birth of a further three male puppies?

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Recent research favors a less direct approach: feeding the mother an acidic diet a few weeks before mating to enhance her acidity naturally and generate more females. Higher production of male puppies can also be encouraged by a more alkaline diet.

What determines the litter size in Dogs?

The average puppy litter size ranges from one to twelve. According to Guinness, a Neapolitan Mastiff in the UK gave birth to a staggering twenty-four puppies in 2004. Why do litter sizes vary, and what factors affect puppy litter size?

The dog’s breed primarily determines the size of the litter. Giant breeds typically have a larger litter because their bodies can safely carry more puppies.

A few breeds and their anticipated litter sizes are listed below:

  • Bullmastiff 5-13
  • Labrador Retrievers 5-10
  • German Shepherd 5-8
  • American Cocker Spaniel 3-7
  • Chihuahua and Yorkie 2-5

Larger dogs typically have a larger litter, although this isn’t always the case. For instance, the Pekingese, which weighs only 7 to 14 pounds, can produce up to 10 puppies during pregnancy.

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Large litters, particularly from smaller dogs, can pose a risk to the mother dog (dam) due to delivery issues. The dam could become exhausted during delivery, and some of the puppies might be delivered stillborn.

Can Humans Make A Dog Have More Female Puppies In A Litter

If there is a waiting list of people interested in puppies, reputable breeders want more. Dog owners might desire more squirming puppy excitement from their canine friends. There are several characteristics of when and how a female dog breeds that are under human control and can influence litter size and composition, but there are also some restrictions.

Dams that are artificially impregnated have fewer litters than dams that are naturally pregnant. This is probably because more sperm die during insemination and sperm collection.

Another significant factor that affects the litter size is the time of year that a dam gives birth to a litter of puppies. The American Kennel Club reports that litters born in the spring are frequently larger than litters born at other times of the year.

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Are There Other Ways To Affect A Dog’s Litter Size?

The dog’s age significantly influences the litter size upon breeding. Particularly with larger breeds, the litter size decreases with the age of the dam. The greatest litter is often produced by dams breeding for two to five years.

Regardless of the dam’s age, the first two litters will often be smaller than those that follow. According to a Royal Canin publication, the third and fourth pregnancies are typically the biggest.

The male sire’s age also influences the size of the litter. The sire’s sperm quantity and quality decline after five years, and the sperm and dam’s eggs have a higher likelihood of fusing at 1.5 to 5 years. The most famous champions typically remain in breeding until they are about five years old.

Female Puppies In A Litter: Does Genetics Affect Litter Size?

Both yes and no are the answers to it.

A little over 15% of the variation in litter size is due to genetics (other than breed). Typically, coat color, eye color, and stature are determined by genetics.

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What Role Does Nutrition Play In the Size Of the Litter?

The number of puppies in a litter is greatly influenced by nutrition. To increase the likelihood of having a larger litter, a high-quality, protein-rich diet should be consumed all year. Smaller litters are produced by dams with unhealthy diets, especially overweight ones.


Dog breeders favor one gender over the other in a litter for various reasons, frequently satisfying their consumers’ desires.

They may also need more females if they intend to employ them in future breeding practices. You can use one of these techniques alone or in combination, regardless of your motivation.

We’ve reached the end of the article that talks about Female Puppies in a Litter. Kindly stay tuned for more articles that relates to the topic; Dog Puppies. You might find the article on why Dogs Chew Their Puppies’ Ears Off interesting.

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