3.5 by the dentine but the teeth do look a little more worn down in appearance than most 3.5 year old. So I would say 3.5 by the book, but maybe older.
I had a retired TWRA guy who held the jawbone say at least 4.5. I have no idea how old he was but here are a couple pictures of him alive and then after I got him on Oct 13th
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