Track When in straight line, tracks are similar to those of a very large domestic cat, except that 4 nonretractile claws may show. Gray Fox prints are sharper than those of Red Fox, but often smaller, with larger toes. Foreprint about 1 1/2" (37 mm) long; hindprints as long, slightly narrower. Hind heel pad may leave only a round dot if side portions fail to print. Fox digs in when running, leaving claw marks even in hard ground, where pads do not print.
Sign Tree and scent posts marked with urine; noticeable on snow as spattered stains and melting.
Caches: Heaped or loosened dirt, moss, or turf. Dug-up cache holes are shallow and wide, since foxes seldom bury very small prey except near the den in whelping season.
Den: Entrance size varies considerably, as most dens are in natural cavities; snagged hair or a few telltale bone scraps occasionally mark entrance; rarely, conspicuous mounds like those of the Red Fox. Several auxiliary or escape dens nearby.
Scat: Small, narrow, roughly cylindrical, usually sharply tapered at one end; darker than Red Fox's, particularly where wild cherries abound.