Re: Can you age this deer by the jawbone?
Like goosehunter said, send the tooth away. Any aging based on the wear of the molars is complete guessing. There are many factors involved in teeth wear which make it near impossible to be accurate. Yes, teeth will naturally wear down over time. However, what the deer eats will cause the teeth to wear and each has a different effect. A deer that eats grasses all its life will most likely have a good amount of tooth surface left even into advanced age. On the other hand, a deer that spends its entire life grinding on acorns and corn will most likely have very little tooth surface left. For example, we had a buck around our house that we estimated at 2.5 last year and my uncle shot him this year, Molars were almost completely gone and he was only around 3.5 or maybe a little older.
What I am saying is that the guys on this site can guess all they want, and granted some will probably guess right, but the only true way to know age is to send it out to get tested.