A puppy will always want to use his mouth, most especially when exploring his environment. And being playful creatures as they are, they will want to place items in their mouths, nibble, and bite whenever they play. Initially, it may not hurt at all when a young puppy bites since not all of their teeth are present yet. But as the puppy’s adult teeth start to grow, the bite will start to become more painful. Some pups will not outgrow this play-biting behavior, carrying it to adulthood. Biting itself is just one of a dog’s instinctive behaviors as they were predators before they got domesticated. Certain situations may trigger a pet dog’s instinctive biting behavior, and this can be somewhat of a danger to nearby people and other pets. Because of this, a puppy has to be trained behaviorally while at a young age so that they can play properly. But if your pet continues to play roughly, consult your veterinarians Derby for assistance in dealing with your dog’s aggressive behavior.