Citrine wagtail 
Citrine warbler 
Citrine white-eye 
Citron-bellied Attila 
Clamorous reed warbler 
Clapper rail 
Claret-breasted fruit dove 
Clarion Grunt 
Clark's nutcracker 
Clark's Spiny Lizard 
Clarks Anemonefish 
Clarks grebe 
Claudia's Wrasse 
Clavelina arafurensis 
Clavelina obesa 
Clavelina Tunicate 
Clay-colored Rain Frog 
Clay-colored thrush 
Cleaner Pipefish 
Clearfin lionfish 
Clicking Shrike-Babbler 
Cliff chipmunk 
Cliff Flycatcher 
Climbing Mantella