Track Hindprint approximately 2" (50 mm) long, 1 1/4" (30 mm) wide. Foreprint nearly as long, and about half as wide. Both prints show 5 toes, with claw marks visible.
Sign Fresh, untamped earth at entrance of prairie dog burrow often indicates occupancy by Black-footed Ferret. (Prairie dogs tamp down mounds of excavated earth.)
Scat: Approximately 3" (75 mm) long, usually segmented when it contains much hair.