I’m pretty sure this is a fox track and not a rogue dog running through the brush, although it is alongside a well beaten trail. You can see how the footprints register, meaning the back feet slot precisely into the print made by the front feet. There’s no messy overlap. This is how cats walk, and my tracking book informs me that out of all the canids this precise register of front and back prints is unique to foxes.
THE ANTHROPOLOGY OF OTHER ANIMALS 