Costas hummingbird 
Cotton pygmy goose 
Cotton-top tamarin 
Cottonmouth jack 
Cottonwick grunt 
couch's kingbird 
Couch's Spadefoot 
Coues' White-Tailed Deer 
Cougar 
Cowtail stingray 
Coyote 
Coypu 
Cozumel emerald 
Crab Cay Anole 
Crab-eating fox 
Crab-eating Raccoon 
Crab-eyed Goby 
Crab-plover 
Crag chilia 
Crane Hawk 
Cranwells horned frog 
craspedocephalus malabaricus 
Craugastor raniformis 
Craugastor rupinius