Key to the Artiodactyla
           
 
Weight up to 910 kg; hump on shoulders; color dark brown; shaggy, especially on shoulder and forelimbs; bearded; head hung low; permanent hooked horns in both sexes, horn cores directed laterally from frontal region (Fig. 70), curl increasing with age
   
Weight 454 kg or less, usually much less; no hump; not dark brown all over, pelage not shaggy, no beard; head more erect; head ornaments either confined to and deciduous in males or present in both sexes (small in females), with deciduous outer sheath
 
           
Artiodactyla
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Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names