I agree with Jeff, so you see a track from a 4.5 year old doe and a 1.5 year old buck, size/depth would show you the which was which? I have me doubts matey!

There is TWO sure fire ways to tell the difference. First, see the deer that made the track...LOL

And second, their walk. A bucks chest is wider than his hips and when deer walk they commonly put their back hoof in the print of the front hoof, being a bucks hips are narrower than it's chest, the second track will lay inside the first track.

Conversely with does, a does hips are wider than her chest (breeding) and her second track will lay outside her first track.

Other than that, both doe and buck have dew claws and may sink in snow and mud depending on the age structure of the deer.

Some go as far as say drag marks, although bucks are lazier than does, I don't find that to be full proof in an old doe and young buck.