Ringtail possums

Animal

Rough cownose ray

Fish

Roughback whipray

Fish

Roughskin dogfish

Russian sturgeon

Fish

Ryukyu spiny rat

Rodent

Sagebrush sparrow

Birds

Saint Helena dove

Salaria basilisca

Salvin's curassow

Birds

Santarem parakeet

Birds

Scarlet myzomela

Birds

Scaled chachalaca

Schomburgk's deer

Animal

Schroederichthys

Fish

Serranus baldwini

Silverband shiner

Fish

Singing cisticola

Birds

Slaty-backed gull

Birds

Socotra scops owl

Raiatea parakeet

Birds

Somali bee-eater

Birds

Solomons nightjar

Sona sea catfish

Spangled cotinga

Speckled sanddab

Fish

Speckled warbler

Spectacled bulbul

Birds

Spalacotheriidae

Speckled tilapias (Tilapia)

Fish

Spectacled weaver

Birds

Splendid sunbird

Birds

Spotted eagle-owl

Birds

Spotted snake-eel

Spotted pardalote

Birds

Striped burrfish

Fish

Striated caracara

Birds

Sulawesi hornbill

Birds

Synodontis sorex

Fish

Tacarcuna warbler

Synodontis soloni

Fish

Taiwan guitarfish

Tail-spot wrasse

Fish

Tanimbar starling

Birds

Telescope shiner

Fish

Tibetan partridge

Birds

Tibetan blackbird

Ticking doradito