Crested porcupine

Distribution

Eight species are placed in the genus ''Hystrix'', only two of which are found outside of Asia. Although it is favored in many parts of its range as food, its conservation status is set at least concern.

Behavior

The crested porcupine is a terrestrial mammal; they very seldom climb trees, but can swim. They are nocturnal and monogamous. The crested porcupine takes care of the young for a long time and small family groups consist of the adult pair and young of various ages. In defense, when disturbed, they raise and fan their quills to make themselves look bigger. If continually bothered, the crested porcupine will stamp its feet, whirr the quills, and charge the disturber back end first trying to stab the enemy with the thicker, shorter quills. These attacks are known to have killed lions, leopards, hyenas, and even humans.

Crested porcupines have been known to collect thousands of bones that they find at night. They are mostly nocturnal, and they may wander upon the skeletons of many animals. They collect these bones, and store them in an underground chamber, or cave. Sometimes, humans dig up these bones.

Reproduction

Most of what is known about reproduction in the crested porcupine comes from individuals in captivity. Usually, female crested porcupines have one litter every year. One or two very well developed young are born in a chamber within the burrow that is usually lined with grass, after a 66-day gestation period, on average. The young weigh about 1,000 g at birth, which is about 5% of the mother's weight. They leave the den after one week. At this time, the spines begin to harden. Crested porcupines reach adult weight at one to two years and are often sexually mature just before then. Breeding occurs throughout the year.

Food

The crested porcupine is for the most part herbivorous, eating roots, bulbs, and leaves, but occasionally they do consume insects, small vertebrates, and carrion. To ingest calcium and sharpen incisors, they often gnaw on bones. These animals often travel long distances looking for food. They have high crowned teeth that grind plant tissues which are digested in the stomach, and the undigested fibers are retained in an enlarged appendix and anterior large intestine, where they are broken down by microorganisms.