Paedomorphosis is where juvenile characteristics are maintained in the adult animal. In addition to its puppy-like looks, the dog has a more slender coronoid process of the lower jaw that has a noticeable overhang not present in the wolf. Wolves and dogs are also different in the area of behavior. Wolves can be tamed, but they still have a wild temperament. Wolves tend to react in an aggressive, defensive way to the unfamiliar while most domesticated dogs do not.
Dogs also vocalize more than wolves.
In addition, domesticated dogs have learned to be subordinate to dominant humans. Finally, adult dogs display behavior that is considered juvenile behavior in wolves. Therefore, dog behavior and attention seeking action can be considered similar to the behavior of immature wolves. In conclusion, dogs and gray wolves are very similar genetically. They can mate and produce viable, fertile offspring.