Common skink 
Common snapping turtle 
Common Stream Lizard 
Common Sun Skink 
Common Supple Skink 
Common Tree Snake 
Common wall lizard 
Common Water monitor 
Common zebra-tailed lizard 
Concho Water Snake 
Confused Coral Snake 
Cope's Vine Snake 
Copper-tailed ctenotus 
Copper-Tailed Skink 
Copperhead 
Corallus ruschenbergerii 
Corn snake 
Costa Rica Water Snake 
Costa Rican Coralsnake 
Crab Cay Anole 
craspedocephalus malabaricus 
Creaser's mud turtle 
Crested Anole 
Crested Bicycle-dragon