![Page 1: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/1.jpg)
Rodentia
![Page 2: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/2.jpg)
Rodentia
• The single largest group of mammals is the rodentia. • Most non-flying mammals are rodents. • There are about 1500 living species of rodents (out of 4000
species of mammals).
![Page 3: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/3.jpg)
Rodentia
• Most people are familiar with mice, rats, hamsters, and guinea pigs.
• Rodentia also includes beavers, muskrats, porcupines, woodchucks, chipmunks, squirrels, prairie dogs, and chinchillas.
• Rodentia does NOT include rabbits (they are different from rodents in that they have an extra pair of incisors and other different skeletal features).
![Page 4: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/4.jpg)
Rodentia
• Rodents are found native on all continents except Antarctica.
• One family of rodents, the Muridae, contains over 1100 species.
• These are mice and rats.
![Page 5: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/5.jpg)
Rodentia
• Rodents show their greatest diversity in South America. • Some of these include:
– mountain viscachas (which are rabbit-like animals that live in the moutains)
– Patagonian cavies (which are rabbit-like, fast-running animals with long ears and a short tail)
– the coypu (which is a marsh-dwelling animal that is hunted for its fur),
– burrowing animals like the pacas and tuco-tuco.
![Page 6: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/6.jpg)
Mountain viscachas
![Page 7: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/7.jpg)
Patagonian cavies
![Page 8: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/8.jpg)
Coypu
![Page 9: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/9.jpg)
Paca
![Page 10: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/10.jpg)
Tuco-tuco
![Page 11: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/11.jpg)
Rodent
• The capybara, which also lives in South America, is the largest living rodent.
• It is about the size of a pig and gets up to a weight of about 110 pounds.
• They live in the plains of South America and are often hunted or ranched for their meat.
![Page 12: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/12.jpg)
Capybaras
![Page 13: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/13.jpg)
Rodent
• All rodents share common features. • They have a single pair of incisors in each jaw, and they
grow continually throughout life. • The incisors have thick enamel layers on the front but not
on the backs; this causes them to retain their chisel shape as they are worn down.
![Page 14: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/14.jpg)
Rodent
• Behind the incisors is a large gap in the tooth rows, or diastema.
• There are no canines, and typically only a few molars at the rear of the jaws.
• Rodents have unique chewing patterns and they also have large jaw muscles to help with this.
![Page 15: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/15.jpg)
Rodent
• Male rodents have a baculum, which is a penis bone. • Most rodents are herbivores, but some are omnivores
while others eat only insects. • Rodents live in many different places, such as trees and
burrows. • They can also be found in some aquatic habitats and also
in the desert. • They can be solitary, like the porcupine, or live in highly-
social groups, like prairie dogs.
![Page 16: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/16.jpg)
Rodent
• Rodents cost billions of dollars in lost crops each year. • Some are also carriers of human disease such as bubonic
plague, typhus, and Hanta fever. • Some rodent species are economically important as
sources of food or fur. • Others are used extensively in biochemical research (ie.
NOD-SCID, C57-Bl6, and nude mice).
![Page 17: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/17.jpg)
Eastern Chipmunk
•Tamias striatus
![Page 18: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/18.jpg)
Gray Squirrel
•Sciurus carolinensis
![Page 19: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/19.jpg)
Beaver
•Castor canadensis
![Page 20: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/20.jpg)
Alabama Beach Mouse
•Peromyscus polionotus ammobates
![Page 21: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/21.jpg)
Black Rat
•Rattus rattus
![Page 22: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/22.jpg)
Mouse
![Page 23: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/23.jpg)
Rat
![Page 24: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/24.jpg)
Squirrel
![Page 25: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/25.jpg)
![Page 26: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/26.jpg)
Chipmunk
![Page 27: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/27.jpg)
Vole
![Page 28: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/28.jpg)
Kangaroo Rat
![Page 29: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/29.jpg)
Gopher
![Page 30: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/30.jpg)
![Page 31: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/31.jpg)
Porcupine
![Page 32: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/32.jpg)
![Page 33: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/33.jpg)
![Page 34: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/34.jpg)
Beaver
![Page 35: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/35.jpg)
![Page 36: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/36.jpg)
Hamster
![Page 37: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/37.jpg)
![Page 38: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/38.jpg)
Lemming
![Page 39: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/39.jpg)
![Page 40: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/40.jpg)
Jerboa
![Page 41: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/41.jpg)
![Page 42: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/42.jpg)
Gerbil
![Page 43: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/43.jpg)
Guinea Pig
![Page 44: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/44.jpg)
![Page 45: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/45.jpg)
Chinchilla
![Page 46: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/46.jpg)
![Page 47: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/47.jpg)
Prairie Dog
![Page 48: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/48.jpg)
![Page 49: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/49.jpg)
Pocket Mice
![Page 50: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/50.jpg)
Mole Rat
![Page 51: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/51.jpg)
![Page 52: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/52.jpg)
![Page 53: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/53.jpg)
![Page 54: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/54.jpg)
Groundhog
![Page 55: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/55.jpg)
![Page 56: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/56.jpg)
Capybara
![Page 57: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/57.jpg)
Marmot
![Page 58: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/58.jpg)
![Page 59: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/59.jpg)
Muskrat
![Page 60: Rodentia. The single largest group of mammals is the rodentia. Most non-flying mammals are rodents. There are about 1500 living species of rodents (out](https://reader036.vdocuments.mx/reader036/viewer/2022081516/56649f395503460f94c56465/html5/thumbnails/60.jpg)