[DOC] [TLE] North American porcupine - Wikipedia [PAR] The North American porcupine (Erethizon dorsatum), also known as the 
Canadian porcupine ... The porcupine is the only native North American mammal 
with antibiotics in its ... Each quill contains microscopic barbs which allow it to 
stick into the flesh of ... Natural predators of this species include fishers (a cat-
sized weasel),... [DOC] [TLE] Porcupine Facts - Animal Facts Encyclopedia [PAR] There are about 7 sub-species of North American porcupine, all varying only ... 
Rodents make up about 40% of all the mammal species on Earth. ... The end of 
the tail is naked, and can grasp limbs and support the animal like a fifth limb. .... 
the tips of each quill have hundreds of microscopic, backward-facing barbs that 
look... [DOC] [TLE] Porcupine - Deer Trail [PAR] Porcupines are slow moving, medium size mammals with white-banded quills. ... 
Like all other rodents, the North American Porcupines have four toes on their 
front feet ... The porcupine may have as many as 39,000 quills, on all parts of its 
body, ... Each of the modified hairs is tipped with microscopic barbs that cause 
the... [DOC] [TLE] Porcupine (Quill Pig) [Erethizon dorsatum]: Wildlife and Nature ... [PAR] (Quill Pig, Common Porcupine, North American Porcupine) ... There is 
considerable variation in the color of a porcupine's hair throughout its geographic 
range. ... Each one of the modified hairs is tipped with microscopic barbs that 
cause ... Despite its threatening quills, the porcupine is preyed upon by a number 
of species... [DOC] [TLE] Why porcupine quills slide in with ease but come out with difficulty ... [PAR] Dec 11, 2012 ... North American porcupines have around 30,000 quills on their backs. ... Each 
one is tipped with microscopic backwards-facing barbs, which supposedly ... 
Each quill has hundreds of barbs and Cho removed them all with folded ... of an 
African porcupine, which doesn't have any barbs (see end of post). [DOC] [TLE] North American Porcupine - Erethizon dorsatum - Details ... [PAR] Descriptions and articles about the North American Porcupine, scientifically 
known ... Porcupine quills have microscopic barbs on the tip. ... It also allows 
porcupines to secure themselves in trees with their hind feet ... All porcupines 
have long claws. ... This species is primarily nocturnal and does not hibernate (
Woods 1973). [DOC] [TLE] What Do Porcupines Eat Porcupines,rodents | Science Hub 4 Kids [PAR] American porcupines make up the family Erethizontidae. ... pointed spines, or 
quills, growing from the back and sides and, in some species, from the head and 
tail. The quills, which have needle-sharp ends containing hundreds of barbs, can 
... Of all descendants of the southerners, the North American porcupine, 
Erethizon... [DOC] [TLE] Mammals of Manitoba - Manitoba Forestry Association [PAR] there are nearly 1,000 species of bats, making up about one quarter of all .... 
They are distinguished with quills, or modified hair, with microscopic barbs .... 
alternative longitudinal stripes of dark brown and tan from the neck to the end ... 
Snowshoe hares are a common hare species found throughout northern North 
America. [DOC] [TLE] Erethizon dorsatum - ZipcodeZoo [PAR] The North American porcupine (Erethizon dorsatum), also known as the 
Canadian ... This species is the largest of the New World porcupines and is one 
of the ... their quills, but the quills detach easily and the barbs make them very 
difficult to ... Each one of the modified hairs is tipped with microscopic barbs that 
cause the... [DOC] [TLE] Animal Coverings: From the Standpoint of the Textile Worker - JStor [PAR] celled forms and ending with the genus homo. ... Phylum I. Protozoa (one-celled 
animals, mostly microscopic). ... Thus no animal except a mammal has hairs on 
its ... nation, and there are rare exceptions in each of the above groups. ... Each 
barb bears smaller ..... tionary of Birds, Cone's Key to North American Birds, Part 
II. [DOC] [TLE] Download PDF - Science Education - National Institutes of Health [PAR] 11 Blood vessels,

Question: In the N. American species of this mammal, there are hundreds of microscopic barbs at the end of each quill
Answer: the porcupine