Cattle tyrant 
Cauca guan 
Cauca poison frog 
Caucasian Agama 
Caucasian mountain chiffchaff 
Caucasian squirrel 
Cave myotis 
cave nectar bat 
Cave salamander 
Cave swallow 
Cave swiftlet 
Cave tetra 
Cave-dwelling Rat Snake 
Cedar Waxwing 
Cedros Island Horned Lizard 
Cei's Escuerzo 
Celebes Crested macaque 
Celebes Wrasse 
Central American Agouti 
Central American bushmaster 
Central American dwarf squirrel 
Central American jumping pitviper 
Central American Lyresnake 
Central American squirrel monkey