From what I can find, they have 3-5 puppies per litter.
i know here in Norway some paps did have litters of 6,but i thik that is just some too many for that little type of dog..but anyway..up to 6 is possible..
My pap came from a litter of SEVEN! No kidding. I have photos of them all nursing. So Cute!
My pap had 6 babies!