Zielinski, W. J., Duncan, N. P., Farmer, E. C., Truex, R. L., Clevenger, A. P., & Barrett, R. H. (1999). myops. Quills are hairs with solid, barbed tips and hollow shafts, and a porcupine has an estimated 30,000. The animal has short legs and heavy built. The porcupine's last line of defense is to climb a tree. It has black to brownish-yellow fur and strong, short legs.  The eastern grey squirrel (Sciurus carolinensis) has a gestation period of just 44 days. Individuals range in length from 24 to 36 inches, and weigh between 10 and 30 lbs.  One study suggested that since male fishers are considerably larger than females (often weighing on average twice as much), only males are likely to hunt porcupines.  However, in some cases porcupine quills have indeed killed cougars, although usually this is after the cougar has already consumed the porcupine.. North American Porcupines are large, solitary rodents common in New England, but less common and rarely seen in Connecticut. In the west this hair can be yellowish. It has hairless soles on its feet that help it climb trees. An adult porcupine when attacked turns its rear to the predator. If the fisher manages to force a porcupine down to the ground, the porcupine will try to present its hindquarters and tail to the attacker, but the fisher is quick and agile. They weigh 9 to 15 pounds, with bigger, older adults weighing up to 20 pounds. In one case, when a baby had fallen to its death from a tree, the mother came down and stayed by her baby's side for hours waiting vainly for the baby to revive. Zoo Contact Us. Males that approach a female do not automatically begin mating. The North American porcupine is the second largest rodent species found in North America. Its head and body are 25 to 40 inches long, with a long, thick, muscular tail growing as long as 8 inches. The strength of the porcupine's defense has given it the ability to live a solitary life, unlike many herbivores, which must move in flocks or herds. Only a few drops touch the female, but the chemical reaction allows the female to fully enter estrus. When approached, the porcupine can swing its tail at an attacker's face. The North American porcupine is the only species that lives in the U.S. and Canada, and is the largest of all porcupines. Sweitzer, R. A., Jenkins, S. H., & Berger, J. Due to being hollow, quills of this animal were used to keep gold dust. First, they are agile tree climbers. This large nocturnal rodent has also developed a unique hairstyle in the name of personal protection. The only larger rodent in North America is the beaver. In addition, the range of this species is the northernmost of all porcupines. Mothers spend their daytime hours sleeping, while their young are hidden in a secluded place on the ground. Quills cover the body, except on the legs and belly. , Globally, the North American porcupine is listed as a species of least concern. North American Porcupine on The IUCN Red List site -, https://en.wikipedia.org/wiki/North_American_porcupine, http://www.iucnredlist.org/details/8004/0. Some fossils, such as species from the family Paramyidae, show resemblance to the porcupine, but they are so primitive and generalized that they could be ancestors to all later rodents.  In some parts of the Great Basin, cougars have greatly decreased numbers of porcupines in mountainous forests through predation. Taxonomically, the way scientists assign order to species using Latin names, the North American Porcupine, Erethizon dorsatum, is the only species (dorsatum) in its genus (Erethizon). When porcupines are mating, they tighten their skin and hold their quills flat, so as not to injure each other. North American Porcupine Range Map The fisher will then consume the porcupine through the chest and abdomen, avoiding the quills. Besides forests, porcupines can also be found in grasslands, desert shrub communities and even tundra. New World porcupines make up the Erethizontidae family, which comprises four genera and 12 species. If a fisher locates a porcupine, it cannot hide by fleeing into a tree because the fisher can pursue it and force it down to the ground. The North American Porcupine is a well-known New World rodent. As of 1994, it was listed as an endangered species in Mexico. The North American porcupine migrated from South America, where all New World porcupines or hystricomorphs evolved. , The North American porcupine is most at risk from the fisher (Martes pennanti). North American Porcupine skull. South American hystricomorphs first appeared in the Lower Oligocene period. During the first 6 weeks, females are constantly nearby their young, meeting the babies only during the night. Elbroch, L. M., Feltner, J., & Quigley, H. B. Porcupines have strong, short legs and their feet have hairless soles to help it climb trees. The winter diet of these herbivorous animals mainly consists of tree bark. They continue to nurse for up to four months, which coincides with the fall mating season. Only beavers are larger. In the winter, they mainly eat conifer needles and tree bark. They are stocky with an arched back and short legs. The strong, curved claws, rough foot pads and quills located on the underside of the tail aid the porcupine to be a skilled and agile climber. A single animal may have 30,000 or more quills. Fishers are related to the weasel, with males sometimes exceeding a mass of 5.5 kg (12 lb). This slow-moving porcupine is the second North American rodent in size only to beaver. Long hairs on the front of their body are black or dark brown. They make their dens in hollow trees or in rocky areas. After this, they learn to climb trees and start to forage. The North American porcupine is a rodent. It is an herbivorous animal with pines, or quills, as they are called, all across their body, except the face, underbelly and limbs. After the beaver the the North Amerincan porcupine is the second largest rodent in North America.  In many cases, injury or even death may occur in the predator from embedded porcupine quills even if they are successful in dispatching the porcupine. This large-bodied, slow-moving herbivore is found in coniferous and mixed forested areas through much of the northern and western United States and in Canada. The second largest rodent in North America (beavers are the largest), porcupines are herbivores, dining on leaves, grasses, twigs, buds, and the bark of the same trees these nocturnal animals hide in during the day to sleep.  It is common throughout its range except in some U.S. states in the southeast part of its range. However, some may prefer living and foraging alone. Common Name: North American Porcupine. In eastern North America, porcupines range from Canada to the Appalachian Mountains in West Virginia and Maryland. Habitat: These animals are typically found in hardwood, softwood, coniferous and deciduous forests. At this time, they secrete a thick mucus which mixes with their urine. North American Porcupine Erethizon dorsatum. Once thrust into another animal's skin, these spines may become fatal. A single young is born after a gestation of 210 days. The North American porcupine has a strong odor to warn away predators, which it can increase when agitated. North American Porcupine. Vocalizations include sounds made from the vocal cords (whines, grunts, squeals) and clicking and grinding of the teeth. They inhabit most of Alaska and Canada, the northern part of the Great Lakes region as well as the west and northeast regions of the United States. They live in riparian forests, mesquite scrubland, grasslands, and thorn forests. , Seven subspecies of E. dorsatum are recognized. 22830 Sunrise Rd NE, Stacy, MN 55079 - 651.464.3993. Porcupines have four incisors—two above and two below that are bright orange, strong and adapted to gnawing. They are very tolerant of the colder North American temperatures compared to porcupines of Central and South America. Foraging habits greatly differ among porcupines, depending on group and location. Having the northernmost range of all porcupines, these rodents occur throughout much of North America, from the Arctic Ocean to northern Mexico. , The earliest appearance of E. dorsatum is from the Pleistocene era found along the Arroyo del Cedazo near Aguascalientes, Mexico.  As of 1999, 15 remnant populations remain scattered throughout north-central Mexico. It is distinguished by its stout, slow, lumbering form and by its spiny coat. Similar Images . Other hystricomorphs also migrated, but Erethizon was the only one to survive north of Mexico. , The porcupine is the only native North American mammal with antibiotics in its skin. After repeated attacks, the porcupine eventually weakens, allowing the fisher to flip the porcupine over and rip open the porcupine's underbelly, thus killing it. The first male that comes along typically sits in the same tree below a female. It can climb trees, so its favorite method is to position itself below the porcupine and knock it to the ground, where it is quickly dispatched. E. d. couesi is the most southern ranging from northern Mexico to Colorado. Because quills are so lightly attached, they come off easily when a predator encounters them.  Not present is the S-enantiomer which smells like coconut and is used in flavorings and perfumes. They are mainly active at night (nocturnal); on summer days, they often rest in trees. They are threatened by hunting and habitat loss.  The porcupine's scientific name, Erethizon dorsatum, can be loosely translated as "the animal with the irritating back". Show Aliases. Males are larger than females. 1915 Scott Street Lafayette, IN 47904 Phone: 765-807-1540 Email; FAQs. The quills are modified hairs which have microscopic overlapping sheaths on the tips (functioning like barbs) are filled with a spongy matrix. They choose to forage in these groups in order to protect themselves from predators. Add to Likebox #115943664 - North American porcupine (Erethizon dorsatum), Canadian porcupine.. Some individuals have been found with dozens of quills embedded in their gums to no ill effect. The North American Porcupine is the second largest rodent in North America, out-sized only by beavers, and is characterized by its stout, lumbering form and spiny coat. North American porcupines live in a wide variety of habitats such as dense forests, tundra, grasslands and desert shrub communities. Males are larger than females. They are considered by some to be a pest because of the damage that they often inflict on trees and wooden and leather objects. Once this is accomplished high in the tree, the mating process takes place on the ground. Porcupines do not throw their quills, but when threatened, they contract the muscles near the skin, which causes the quills to stand up and out from their bodies. #118082435 - The North American porcupine is a large rodent in the New World.. The odor is generated by a patch of skin called the rosette, on the lower back where modified quills serve as osmetrichia to broadcast the smell. The quilled pelage of the porcupine makes it unique among North American mammals. Porcupine quillwork is an art form completely unique to North America. North American porcupines are native to the coniferous and mixed-forest habitats of Canada, the northeastern and western regions of the United States and northern Mexico. The hollow quills allow porcupines to stay afloat in water. North American Porcupines are the second largest rodent in North America, out-sized by beavers. Weighing up to 40 pounds it’s hard to imagine that this strict vegetarian can climb onto small branches to feed on the new bark. Elbroch, L. M., Hoogesteijn, R., & Quigley, H. (2016). (2017).  Other colloquial names for the animal include quill pig. There are 11 species, in three genera, of Old World porcupines in the Hystricidae family. The North American porcupine is the second largest rodent in North America, outsized only by beavers. Once a dominant male is successful, he approaches the female and uses a spray of his urine on the female. They are thought to have migrated from Africa, ancestors of the Old World porcupines or Hystricidae or they originated based on a migration of the North American Paramyidae. As it circles the porcupine, every chance it gets, it bites the face. From south to north they are E.d. Since porcupines love salty flavor, they can consume axe handles, canoe paddles, outhouses and even automobile radiator hoses. The word 'porcupine' originates from 'porc espin', meaning ‘spined pig’ in Middle French. Competing males communicate through vocalizations. , Natural predators of this species include fishers (a cat-sized mustelid), wolverines, coyotes, wolves, American black bears, and cougars, as well as humans. Add to Likebox #80749746 - Close up image of large spiny porcupine, Greece. Fishers have two advantages that make them capable hunters of the porcupine. These animals were named 'quilled pigs' by Americans, but they actually rodents, which aren't related to pigs. When the quills are in this position, they become easier to detach from the body, especially when a porcupine swings its tail toward an attacker. epixanthum, E. d. nigrescens, and E. d. The North American Porcupine is best known for and made distinguishable by its spiny quills that cover its body. In addition, the range of this species is the northernmost of all porcupines. Each quill contains microscopic barbs which allow it to stick into the flesh of an attacker. This slow-moving porcupine is the second North American rodent in size only to beaver. My daughter is a brilliant thinker, writer, scholar, and wit. She is currently reading the North American Porcupine (2d edition), so I bought it for myself. Description: Long, barbed quills make the North American porcupine one of Oklahoma’s most distinctive – and prickly – rodents. Erethizon appeared in North America shortly after the two continents joined together in the later Tertiary period. By far the most common is E. d. dorsatum, which ranges from Nova Scotia to Alberta and from Virginia to the Yukon. They usually appear dark brown to black, although some of the hairs and spines on the backs of these animals are yellow. When threatened, an adult porcupine can bristle its quills, displaying a white stripe down its back, and use its teeth to make a warning, clacking sound. , Tracks in sand (human handprint shown for scale). The beaver is the only rodent in North America that is larger than the North American porcupine. The head-and-body length is 60 to 90 cm (2.0 to 3.0 ft), not counting a tail of 14.5 to 30 cm (5.7 to 11.8 in). Quills are modified hairs formed into sharp, barbed, hollow spines.  Porcupines give birth to a single young. I promise you, if a scholar of 18th century British literature enjoys a book on porcupines, you can bet your bottom dollar it's well written. McAllister Center. It has a round body, small ears and a small head. They communicate with conspecifics through a system of acoustic, chemical, visual and tactile signals. Some individuals have been found to live up to 30 years of age. They do not gain full adult weight until the end of the second summer about 4.5 kg. Their quills harden soon after birth. A porcupine can sometimes defend itself by facing the trunk on a branch and presenting its tail to the fisher. Hystrix dorsata Linnaeus, 1758, The North American porcupine (Erethizon dorsatum), also known as the Canadian porcupine, is a large rodent in the New World porcupine family.  By contrast, the North American beaver, which is comparable in size, has a gestation period of 128 days. The latter tries to get pregnant by the 'best' male. The quills are normally flattened against the body and in this position are less easily dislodged.. It is also referred to as the Canadian porcupine or common porcupine. Despite popular myth, the porcupine does not throw its quills. During the winter months, up to 8 individuals may live in the same den. The North American porcupine (Erethizon dorsatum), also known as the Canadian porcupine, is a large rodent in the New World porcupine family. They weigh between 5 and 14 kg, and are 600 to 900 mm long. The North American porcupine is a rodent with black to brownish-yellow fur and quills all over its round body, except for its stomach. Site Development by Brook Maier The hind foot length is 7.5 to 9.1 cm (3.0 to 3.6 in). Instead, when a quill comes in contact with the attacker, it can easily penetrate and become embedded in its skin.  They are subdivided by different ranges across North America. 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