Their tracks average less than two inches in length. Tracks commonly run in straight lines, one print in front of the other. Front and hind prints overlap each other and appear as one print. Only foxes and members of the cat family walk in this manner. In fine mud, the hair on the foot may be visible in the track.
Gray foxes are primarily nocturnal and hunt small mammals.
Sometimes, they hunt by day. They are the only canines that can climb trees. They seek refuge in trees and also climb to find food. The bark of the gray fox sounds like a hoarse cough. If you startle a fox, it may bark at you.