What do you call a newborn dog?

A newborn dog is known as a puppy. This term is specific to canines and denotes the young stage of their life, which typically lasts until about six months of age. Puppies are characterized by their playful behavior and rapid growth, requiring special care and socialization during this formative period. The other terms refer to the young of different species; for example, a kitten is a young cat, a foal is a young horse, and a poult is a young turkey. Each of these terms is unique to its respective animal, which is why "puppy" is the correct choice for a newborn dog.