Key to the Rodentia
           
 
 Tail about equal to head and body length, no white tuft at tip; five toes on hind foot
   
 Tail much longer than head and body length, and with conspicuous white terminal tuft; four toes on hind foot
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names