MAMMALS

Porcupine, Erethizon dorsatum

Family Erethizontidae (Porcupines)

Size/Weight: approx. 28" with tail; approx. 18 lbs.

Range: Western and far northeastern United States

Habitat: Forests, thickets

The porcupine is a primarily arboreal, chunky, lackadaisical rodent with small limbs, a bushy tail, and thousands of pointed barbed quills that serve as its only defense. The color is dark brown to blackish. Found alone or in groups, it is mostly nocturnal but can be seen at all times of the day, especially perched in trees. They feed on all types of plant matter, including buds, branches, bark, roots, and leaves.

Track size (front): 1½" wide x 2" long

Track size (rear): 1¾" wide x 3" long

Description of Track: There are four long toes on the front foot and five on the rear, although the smallest, innermost toe may not register. The toes’ pads on both feet may be indistinct in the track, but the heavy, long claws are almost always obvious. The fused metacarpal pads form a solid, fleshy mass that has a distinct, pebbly texture. The rear track shows a long, wide heel imprint. Tail drag may be evident, and the usual gait is a slow walk.