The New World porcupines, family Erethizontidae, are large arboreal rodents, distinguished by their spiny coverings from which they take their name. The new world porcupine has quill-laden tails that they use during fights. New world porcupines have four teats unlike the six that old world porcupines have. Some, like the thin-spined porcupine (C. subspinosus), spend the bulk of their nights resting, too, with most of their activity centered around feeding. They range in size from 17-32 inches in length. Unlike the old world porcupines, the new world porcupines have adapted to tree climbing (Although they are not the most agile climbers, they get it done. Both are covered with a total of 30,000 or more hollow quills. Here are some fun facts about the fascinating creatures, and a few answers to some earnest questions. Porcupines are a type of rodent found in two main regions of the world, so scientists group them into either Old World or New World porcupines. There are 18 species in this family. Different species can found in desert habitats, various forests, hillsides, mountains, and rocky cliffs. However, New World porcupines are presumably all nocturnal and arboreal, spending their days sleeping in trees or in ground-level hideaways. New World porcupines (family Erethizontidae) The North American porcupine (Erethizon dorsatum) is the largest species in the family, usually weighing less than 7 kg (15.4 pounds) though males occasionally grow significantly larger.Its body is up to 80 cm (31 inches) long, with a tail up to 30 cm. Erethizontidae - New World porcupines. Larger individuals can reach a length of 33 inches and can weigh 29-59 lbs. From the stocky Cape porcupine in South Africa (and across central and southern Africa), to the North American porcupine known as the New World porcupine.. Their body length varies between 11-19 inches and their weight varies between 3.3-5lbs. Similar to their cousins, they are stocky and rounded in build but they differ for … They are found in North, Central and South America. Source- dailymail.co.uk Old World porcupines have long quills up to 20 inches that take the shape of the skirt around the porcupine. They can be found in altitudes up to 12,100 ft. high. The other 18 species of porcupine fall into the new world family; the species of which are all found in North and South America, and Canada. They inhabit forests and wooded regions across North America, and into northern South America. Old world porcupines are larger and heavily built. These large rodents are the perfect example of a diverse species. Old World porcupine is the common name for any of the large, heavyset, terrestrial rodents comprising the family Hystricidae, characterized by short limbs, a tail less than half as long as the head and body, and a spiny covering of sharp quills, spines, and bristles that are not barbed, unlike the barbed quills of the New World porcupines of the Erethizontidae family. Porcupines live all over the world. Habitat of the Porcupine. ), they use their tails when climbing, are not as nocturnal and are mostly smaller. They inhabit forests and wooded regions across North America, and into northern South America. The New World porcupines, family Erethizontidae, are large arboreal rodents, distinguished by their spiny coverings from which they take their name. Porcupines have long spiny barbed hairs or quills. Old World porcupines live in Europe, Africa, and Asia; some examples are the North African crested porcupine, African brush-tailed porcupine, and Indian crested porcupine. 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