Incisors 5/4 (Fig. 1); tail naked, scaly, and prehensile, basal one-third black, distal two-thirds white; hind foot with opposable big toe (Fig. 2); females with pouch (marsupium) on belly enclosing mammary area
   
Incisors 3/3 or fewer; tail not as above, if scaly then neither prehensile nor bicolored; big toe not opposable; no pouch on belly of females
 
           
Artiodactyla
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Carnivora
 - 
Chiroptera
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Didelphimorphia
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Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names