I killed a sow in the Dayton unit a few years ago that was probably only 125, but got the tooth data back and she aged out at 19 years old. Killed another old sow in 49 DN this spring and same thing, 125 soaking wet, but looks like she'll hit 15 years old. Even though they're old, they aren't very big... but I bet they really got the fawn/calf finding thing down.