Brown Slender Toad 
Brown snake eagle 
Brown tang 
Brown teal 
Brown thornbill 
Brown Thrasher 
Brown tinamou 
Brown tree snake 
Brown treecreeper 
Brown Trout 
Brown twinspot 
Brown Vine Snake 
Brown Violetear 
Brown water snake 
Brown Whip Snake 
Brown Winged Kingfisher 
Brown Wolf Snake 
Brown Wood Owl 
Brown wood turtle 
Brown woodland warbler 
Brown woolly monkey 
Brown's Leopard Frog 
Brown-and-white butterflyfish 
Brown-backed Chat-tyrant