Tarzan the Untamed by Edgar Rice Burroughs

Numa, the lion, was hungry. He had come out of the desert country to the east into a land of plenty but though he was young and strong, the wary grass-eaters had managed to elude his mighty talons each time he had thought to make a kill.

Numa, the lion, was hungry and very savage. For two days he had not eaten and now he hunted in the ugliest of humors. No more did Numa roar forth a rumbling challenge to the world but rather he moved silent and grim, stepping softly that no cracking twig might betray his presence to the keen-eared quarry he sought.