Their color is from dark brown to light black. The porcupine is a vegetarian. It eats plants such as grasses, dandelions, twigs and water plants such as water lilies and pond weeds. In the winter it eats bark from birch, maple, pine, beech, oak, cherry, willow, and fir trees. The porcupine especially likes bark that has been touched by human hands.
Porcupines are most active during the night.
In the winter they spend most of their time in evergreen trees. In the summer they wander for food. Porcupines live in the wooded areas from Alaska to the northern part of Mexico. Their dens are located in a variety of places like old buildings, logs, caves, and in trees. Their homes are lined with soft materials.