Good one, and to be billed as the "biggest metal detector site on the web" must have a lot of other things of interest.
While on web sightings, here's one I recently found that has one particular subject of interest...It has the best understandable views of a bison skeleton.
This might help a digger that finds a single bone identify at least which end of a creature it might be.
For the moment I'm assuming there may be some commonality with other four legged creatures like deer, horse, moose, mamouth, coyote ?
Front page, half way down, click,
BISON SKELETAL ANATOMY