Interesting...poor thing! So absolutely no legs or tail? Based on the head alone that is a dog...if you look at the skeleton of the coyote that someone attached, see the slope on the skull, how it is a nice slight slope (like bunny hill) and your found skull the slope is more steep (break an arm mountain). Also, notice the teeth on your found skull, they're almost perfect a wild coyote or wolf eat bones...that's my two cents...
