" Scarcely had they closed their eyes than the terrifying cry of a panther rang out from the jungle behind them. Closer and closer it came until they could hear the great beast directly beneath them. For an hour or more they heard it sniffing and clawing at the trees which supported their platform, but at last it roamed away across the beach, where Clayton could see it clearly in the brilliant moonlight—a great, handsome beast, the largest he had ever seen. "
― Edgar Rice Burroughs , Tarzan of the Apes (Tarzan, #1)