However, it can vary significantly depending on factors such as:
* The age of the mother: Younger dogs tend to have smaller litters.
* The size of the mother: Larger dogs tend to have larger litters.
* The breed: Some lines within the breed might have larger or smaller litter sizes.
* Overall health and genetics: Both the mother and father's genetics play a role.
It's important to note that it's not uncommon for Springer Spaniels to have litters of 4-10 puppies.