Order Rodentia
![](images/mtm_slideshows/3220403579_a6bafc7c30_b.jpg)
SquirrelFamily:Sciuridae
Photo: RunnerJenny@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/1923743548_42064fe588_b.jpg)
ChipmunkFamily:Sciuridae
Photo: Vickis Nature@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/2563620251_a75241e505_b.jpg)
MarmotFamily:Sciuridae
Photo: Tearsandrain@flickr.com License: Creative Commons attrib/noncom/sharealike
![](images/mtm_slideshows/21530705_d9109a740f_o.jpg)
Prairie DogFamily:Sciuridae
Photo: Thomas Hawk@flickr.com License: Creative Commons attrib/noncom
![](images/mtm_slideshows/2452702213_221cf83520_o.jpg)
BeaverFamily:Castoridae
Photo: sherseydc@flickr.com License: Creative Commons attrib/sharealike
![](images/mtm_slideshows/Kangaroo-rat.jpg)
Kangaroo RatFamily:Heteromyidae
Photo: US Fish & Wildlife@Wikimedia Commons License: Public Domain
![](images/mtm_slideshows/2237813541_cba191f403_b.jpg)
Bottas Pocket GopherFamily:Geomyidae
Photo: ChuckThePhotographer@flickr.com License: Creative Commons attrib
![](images/mtm_slideshows/135913785_e306c47172_b.jpg)
JerboaFamily:Dipodidae
Photo: wetwater@flickr.com License: Creative Commons attrib/noncom/sharealike
![](images/mtm_slideshows/Phodopus_roborovskii_sand.jpg)
Roborovskis Dwarf HamsterFamily:Cricetidae
Photo: Bulli@Wikimedia Commons License: Creative Commons attrib/sharealike
![](images/mtm_slideshows/Bank_vole.jpg)
Bank VoleFamily:Cricetidae
Photo: soebe@Wikimedia Commons License: Creative Commons Free Documentation License
![](images/mtm_slideshows/800px-Muskrat_swimming.jpg)
MuskratFamily:Cricetidae
Photo: auburnxc@Wikimedia Commons License: Creative Commons attrib/sharealike
![](images/mtm_slideshows/Peromyscus_maniculatus.jpg)
Deer MouseFamily:Cricetidae
Photo: US National Park Service@Wikimedia Commons License: Public Domain
![](images/mtm_slideshows/Gerbil.jpg)
GerbilFamily:Muridae
This family includes old world (European) rats and mice. Photo: Wikimedia Commons License: Public Domain
![](images/mtm_slideshows/183673532_28ea8328d7_b.jpg)
SpringhaasFamily:Pedetidae
Photo: brick1083@flickr.com License: Creative Commons attrib/noncom
![](images/mtm_slideshows/800px-Gundi_Ctenodactylus_gundi_051117_2.jpg)
GundiFamily:Ctenodactylidae
Photo: Threedots@Wikimedia Commons License: Public Domain
![](images/mtm_slideshows/3212354538_a54e016927_o.jpg)
Naked Mole RatFamily:Bathyergidae
Photo: The One True b!X@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/1465408995_c347f6aa2e_b.jpg)
African PorcupineFamily:Hystricidae
Photo: WxMom@flickr.com License: Creative Commons attrib/sharealike
![](images/mtm_slideshows/2753273158_e45c3c7069_b.jpg)
North American PorcupineFamily:Erethizontidae
Photo: dborronoss@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/344159740_13d50ea969_b.jpg)
ChinchillaFamily:Chinchillidae
Photo: guppiecat@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/742px-Bristol.zoo.capybara.arp.jpg)
CapybaraFamily:Caviidae
Photo: Adrian Pingstone@Wikimedia Commons License: Public Domain
![](images/mtm_slideshows/847643300_feafc6ecab_o.jpg)
CapybarasFamily:Caviidae
Photo: Márcio Cabral de Moura@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/2915008871_fffa37ebd0_b.jpg)
Guinea PigFamily:Caviidae
Photo: law_keven@flickr.com License: Creative Commons attrib/sharealike
![](images/mtm_slideshows/2609031709_294bfeef45_b.jpg)
Red-Rumped AgoutiFamily:Dasyproctidae
Photo: guppiecat@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/256456138_4bf33cd14e_b.jpg)
NutriaFamily:Myocastoridae
Photo: Clod79@flickr.com License: Creative Commons attrib/noncom/noderiv
![](images/mtm_slideshows/2473796339_36b914eecb_b.jpg)
HutiaFamily:Capromyidae
Photo: Joachim S. Müller@flickr.com License: Creative Commons attrib/noncom/sharealike
33 Families, 2277 Species
Rats, mice, squirrels, capybara
Worldwide (not Antarctica)
Incisors & cheek teeth separated by diastema, ever–growing incisors
6 g to over 50 kg.