Order Rodentia

SquirrelFamily:Sciuridae
Photo: RunnerJenny@flickr.com License: Creative Commons attrib/noncom/noderiv

ChipmunkFamily:Sciuridae
Photo: Vickis Nature@flickr.com License: Creative Commons attrib/noncom/noderiv

MarmotFamily:Sciuridae
Photo: Tearsandrain@flickr.com License: Creative Commons attrib/noncom/sharealike

Prairie DogFamily:Sciuridae
Photo: Thomas Hawk@flickr.com License: Creative Commons attrib/noncom

BeaverFamily:Castoridae
Photo: sherseydc@flickr.com License: Creative Commons attrib/sharealike

Kangaroo RatFamily:Heteromyidae
Photo: US Fish & Wildlife@Wikimedia Commons License: Public Domain

Bottas Pocket GopherFamily:Geomyidae
Photo: ChuckThePhotographer@flickr.com License: Creative Commons attrib

JerboaFamily:Dipodidae
Photo: wetwater@flickr.com License: Creative Commons attrib/noncom/sharealike

Roborovskis Dwarf HamsterFamily:Cricetidae
Photo: Bulli@Wikimedia Commons License: Creative Commons attrib/sharealike

Bank VoleFamily:Cricetidae
Photo: soebe@Wikimedia Commons License: Creative Commons Free Documentation License

MuskratFamily:Cricetidae
Photo: auburnxc@Wikimedia Commons License: Creative Commons attrib/sharealike

Deer MouseFamily:Cricetidae
Photo: US National Park Service@Wikimedia Commons License: Public Domain

GerbilFamily:Muridae
This family includes old world (European) rats and mice. Photo: Wikimedia Commons License: Public Domain

SpringhaasFamily:Pedetidae
Photo: brick1083@flickr.com License: Creative Commons attrib/noncom

GundiFamily:Ctenodactylidae
Photo: Threedots@Wikimedia Commons License: Public Domain

Naked Mole RatFamily:Bathyergidae
Photo: The One True b!X@flickr.com License: Creative Commons attrib/noncom/noderiv

African PorcupineFamily:Hystricidae
Photo: WxMom@flickr.com License: Creative Commons attrib/sharealike

North American PorcupineFamily:Erethizontidae
Photo: dborronoss@flickr.com License: Creative Commons attrib/noncom/noderiv

ChinchillaFamily:Chinchillidae
Photo: guppiecat@flickr.com License: Creative Commons attrib/noncom/noderiv

CapybaraFamily:Caviidae
Photo: Adrian Pingstone@Wikimedia Commons License: Public Domain

CapybarasFamily:Caviidae
Photo: Márcio Cabral de Moura@flickr.com License: Creative Commons attrib/noncom/noderiv

Guinea PigFamily:Caviidae
Photo: law_keven@flickr.com License: Creative Commons attrib/sharealike

Red-Rumped AgoutiFamily:Dasyproctidae
Photo: guppiecat@flickr.com License: Creative Commons attrib/noncom/noderiv

NutriaFamily:Myocastoridae
Photo: Clod79@flickr.com License: Creative Commons attrib/noncom/noderiv

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.