It can take up to one hour between each puppy. But if your dog has had contractions for over 2 hours and no puppy, call your vet.
How Long Between The Birth Of Each Puppy?
Well. That depends on the dog. My dog had her puppies 30 minutes apart. But my previous dog had them 3 hours apart. It really depends on the mother.
It depends on the mother, some can be 2 minutes apart