Dwarf hamsters usually have litters ranging from 4 to 12 pups, with an average of 6-8 pups.
A litter of 3 pups is quite small for a dwarf hamster. It's important to remember that every hamster is an individual, and there can be variations in litter sizes.
If you're concerned about a hamster's litter size, it's always best to consult with a veterinarian or experienced breeder for advice.