Bronzed frog 
Brown egg frog 
Brown Mantella 
Brown Slender Toad 
Brown's Leopard Frog 
Brown-eyed Treefrog 
Buckley's slender-legged treefrog 
Bulun White-lipped Frog 
Busuanga Wart Frog 
Butter Frog 
Cachabi robber frog 
Canadian toad 
Canal Zone tree frog 
Cane toad 
Canelos Tree Frog 
Cannatella's Spiny-backed Frog 
Canyon tree frog 
Cape river frog 
Carabaya Rain Frog 
Carchi Andes toad 
Caribbean White-lipped Frog 
Cascades frog 
Cauca poison frog 
Central Bright-eyed Frog