Physical feature: Some members have elongated bodies and their short legs are
covered with short, flat and chocolate coloured sharp bristles. The most salient
feature is the presence of stout and sharp quills. The crested porcupine, for
example, has black and white spines on two third upper parts and flanks of the
body. Most species have a crest comprising long and coarse hairs. The body weight
ranges from 13 to 27 kg. The other features include pig like eyes and short and
Reproduction: The mammary glands are located on the sides of the body. Sexual maturity is attained at about two years of age. The female gives birth one to two young after a gestation of 90~20 days. Only one litter is produced annually. The young weighing 300-330 g is fully furred with eyes open. Young are nursed for 13-19 weeks.