* Hybrids are unpredictable: Mixing breeds means the offspring inherit genes from both parents. This makes litter size highly variable.
* Breed differences: Saint Bernards typically have smaller litters (5-8 pups) than Labradors (6-10 pups). The mix will fall somewhere in between, but there's no predictable average.
* Individual factors: The mother dog's age, health, and overall size can all influence litter size, regardless of breed.
If you are considering a Saint Bernard-Labrador mix, it's best to talk to the breeder to understand the expected litter size for a specific pairing.