Several factors can influence the litter size, including:
* Age of the mother: Younger Rottweilers tend to have smaller litters.
* Overall health of the mother: A healthy mother is more likely to have a larger litter.
* Genetics: Some bloodlines are known for having larger or smaller litters.
* Number of previous litters: A Rottweiler that has had multiple litters may have smaller litters in the future.
It's important to note that larger litters can be more challenging for the mother dog, and may require extra care and attention to ensure the health and wellbeing of both the puppies and the mother.