* Age and health of the mother: Younger, healthier pugs tend to have larger litters.
* Genetics: Some bloodlines are known for having larger litters than others.
* Overall health: A pug's overall health and nutrition can influence litter size.
* Number of previous pregnancies: Pugs who have had multiple litters may have smaller litters later in life.
Generally, a pug litter can range from 1 to 6 puppies.
It's important to remember that breeding pugs should only be done responsibly and ethically. This includes ensuring the mother's health, finding suitable homes for all puppies, and working with a reputable veterinarian for breeding and whelping care.