Sri Lankan sloth bear 
Steller sea lion 
Stoat 
Stripe-necked mongoose 
Striped Hyaena 
Striped polecat 
Striped skunk 
Subantarctic fur seal 
Sumatran tiger 
Sun bear 
Sunda clouded leopard 
Sunda leopard cat 
Swift Fox 
Syrian brown bear 
Tayra 
Tibetan wolf 
Tiger 
Transvaal lion 
Weddell seal 
Western Mountain Coati 
White-nosed coati 
Wolverine 
Yellow Mongoose