Spinner dolphin 
Spixs night monkey 
Spotted Hyena 
Springbok 
Sri Lankan axis deer 
Sri Lankan elephant 
Sri Lankan Jackal 
Sri Lankan Leopard 
Sri Lankan sambar deer 
Sri Lankan sloth bear 
Steenbok 
Steller sea lion 
Stoat 
Stone sheep 
Straw-coloured Fruit Bat 
Stripe-necked mongoose 
Striped ground squirrel 
Striped Hyaena 
Striped polecat 
Striped possum 
Striped skunk 
Subantarctic fur seal 
Sugar glider 
Sulawesi bear cuscus