* The mother's age and health: Younger, healthier pugs tend to have larger litters.
* The sire's genetics: Some males have a tendency to produce larger litters than others.
* Overall health and environmental conditions: Factors like nutrition and stress can influence litter size.
It's important to note:
* Larger litters can be challenging for the mother dog. It's crucial to provide proper care and nutrition to ensure her well-being and the health of all puppies.
* Smaller litters are also possible. It's not uncommon for pugs to have only 1 or 2 puppies in a litter.
If you're planning to breed pugs, it's vital to consult with a veterinarian and experienced breeder to ensure responsible breeding practices and the health of both the mother and puppies.