Puppy Jaw Growing. Over night a big lump appeared on my dogs jaw/neck area. While puppy teeth (deciduous) are commonly linked to the reason for oral.

As the puppies grow, the lower jaw grows to catch up to the upper jaw. As the puppy's head grows, the skull including the upper jaw sometimes develops quicker than the lower jaw. If your puppy’s teeth are stopping the normal growth of his jaws, then surgery to remove those puppy teeth may be performed.