Around here we call that the "Amish Crop". LOL Yes, it's a botched nubbin', cut too short. Did your pup happen to come from a mill or BYB? That's usually a good indicator that the breeder (or bad vet) didn't properly crop the length. By the looks of the pup's face and elongated nose......I would assume he came from poor breeding. Usually it's the nose that can give it away. My girl came from an Amish Miller, but had no idea back then what a miller or inscroupulous breeder was. My mistake I am paying for today, along with Lily and her health issues. Nonetheless, they still wiggle that nub just the same. Very pretty pup by the way. Great face!