RE: deer with little or no teeth?
Did you pull the jawbone or just take a good look? I know of many hunters who have been misled by just seeing the first few teeth. If I had to guess, that was an early born, big fawn.
To quote:"The central two incisors may still be erupting. Incisors may appear twisted as they emerge through the gum. Generally, there are only four cheek teeth showing. The third premolar has three cusps."
If a deer has worn their teeth down, that should be easy to tell. All adult teeth will be in place, but worn.
Tough to say without the jawbone to examine.