Key to the Lagomorpha
           
 
 Size larger, averaging 1.8-3 kg; nape patch small and indistinct; pelage with abundance of black guard hairs; postorbital processes usually fused to skull (Fig. 25b)
   
 Size smaller, 1.8 kg or less; nape patch prominent behind ears; less black pelage; postorbital processes touching but not well fused to skull (as in Lepus,
Fig. 25a)
 
           
Artiodactyla
 - 
Carnivora
 - 
Chiroptera
 - 
Didelphimorphia
 - 
Insectivora
 - 
Lagomorpha
 - 
Rodentia
 - 
Xenarthra
Scientific Names - Common Names