Colorado Desert Sidewinder 
Coluber constrictor 
Columbia spotted frog 
Columbian Black-tailed Deer 
Columbian ground squirrel 
Comb duck 
Comb-crested jacana 
Comber 
Comely shiner 
Comet 
Commersons dolphin 
Commersons frogfish 
Common Barking Gecko 
Common Basilisk 
Common Big-eyed Snake 
Common Big-headed Frog 
Common black hawk 
Common Blackbird 
Common Blunt-headed Tree Snake 
Common bottlenose dolphin 
Common box turtle 
Common bronze wing 
Common brown lemur 
Common brushtail possum