each foot) reaching ground 

 Three genera — Vulpes 

 Urocyon 

 Canis 

 Family FELIDAE Cats 



Head rounded; tail long or short, well haired, but not bushy; 

 claws retractile; four digits (on each foot) reaching ground 

 Two genera — Fehs 

 Lynx 

 Order PINNIPEDIA (Not included in the general Mammal Key) 



Marine carnivores, with legs modified into paddlclike structures 

 Family OTARIIDAE Eared Seals, Sea-lions 



Hind limbs capable of rotation; with small external ears 

 Three genera — Zalophus 



Eumetopias 

 Callorhinus 

 Family PHOCIDAE Hair Seals 



Hind limbs incapable of rotation; no external ears 

 Three genera — Phoca 



Cystophora 



Mirounga (Almost extinct) 

 Order RODENTIA Rodents 



Without canine teeth; incisors two above and two below, long and 

 without roots; with a wide gap between incisors and cheek teeth 

 Family SCIURIDAE Marmots, Ground Squirrels, Prairicdogs, 

 Chipmunks and Squirrels 



Squirrel-like; tail well haired; head rounded; skull with 

 definite post-orbital processes 

 Eight genera — Marmota 

 Citellus 

 Cynomys 

 Eutamias 

 Tamias 

 Sciurus 

 Tamiasciurus 

 Glaucomys 

 Family GEOMYIDAE Pocket Gophers 



With fur-lined cheek pouches; animal adapted for burrow' 

 ing; limbs, ears and tail short; fore feet with greatly devel' 

 oped claws 



Three genera — Thomomys 

 Geomys 

 Cratogeomys 

 476 



