The difference bewteen the two will be obvious once you see both. Mange will usually result in total lose of hair in patches along with develoment of scabs, and eventually, over time, the coyote with mange will/can become nothing but gross, stinkin, scabbed over skin from one end to the other, usually starting at the rear working forward. A mangy coyote will stink to high heavens!! The worse the mange, the worse the smell. If the mange is in the early stages, the smell won't be any worse than a normal smelling coyote.