Porcupines have 5 toes on the back feet and 4 toes on the front. Hind feet have long, curved claws and thick pads, which leave distinctive markings. The porcupine has two distinct front teeth, which are used for gnawing. The two teeth continuously grow through out the course of the porcupines life. They are not anti-social, however.
Porcupines do interact with other animals.
During cold winter months, porcupines exist entirely on twigs and bark. A traditional courtship ritual involves the male squeaking out a mating call. Females respond with a call of their own. Nose rubbing begins as the female and the male approach each other. One to two baby porcupines are born in each litter after a 7-month gestation period.