2- Signs of Aggression or Submission
If your puppy is feeling brave or aggressive, he’ll try to make himself larger by standing tall, with his ears and tail sticking upright. He’ll also push out his chest and raise the hair on his neck and back. He might also growl and wave his tail slowly.
It’s very rare for a dog to become aggressive out of nowhere. Most often, the main cause is a lack of proper socialization and training, but there are other causes that can contribute to this issue, like Pain, illness, fear or establishing dominance..
On the other hand, a submissive dog will try to make himself appear small and act like a puppy. This is because an adult dog will “tell off” a puppy but not attack him.
Submission will take the form of a sideways crouch near to the ground, his tail held low but wagging away. He may also try to lick the face of the dominant dog or human. He may even roll on his back.
You can also tell if your dog is a submissive dog if he is too calm showing you signs like lying down a lot, lowering his gaze, making his body look smaller, hiding, licking another dog’s chin, or moving his ears back.
In either case, it will require you to help train him out of these behaviors. Either by reducing aggression or helping him feel more confident and not shrinking back.
Your Puppy’s Body Language
Barking or Whining