* The mother dog's age and health: Younger dogs tend to have larger litters.
* The breed of the father dog: Some breeds are known for having larger litters than others.
* Genetics: Some dogs are simply genetically predisposed to have more puppies than others.
Typical Golden Doodle litter sizes range from 3-8 puppies, but it's not unheard of for them to have even more or fewer.