Gorilla's King (1977)

A young couple die in a plane crash in the jungle. Their son is found by Tarzan and Jane who name him Boy and raise him as their own. Five years later a search party comes to find the young heir to millions of dollars. Jane agrees, against Tarzan's will, to lead them to civilization.

As a child living in Africa, Jill Young saw her mother killed while protecting wild gorillas from poachers led by Andrei Strasser. Now an adult, Jill cares for an orphaned gorilla named Joe -- who, due to a genetic anomaly, is 15 feet tall. When Gregg O'Hara arrives from California and sees the animal, he convinces Jill that Joe would be safest at his wildlife refuge. But Strasser follows them to the U.S., intent on capturing Joe for himself.

Raised by wild animals since childhood, Mowgli is drawn away from the jungle by the beautiful Kitty. But Mowgli must eventually face corrupt Capt. Boone, who wants both Kitty's hand and the treasures of Monkey City – a place only Mowgli can find.

Harry Holt returns to Africa with his friend Martin Arlington to head up a large ivory expedition.

After a threat from the tiger Shere Khan, Mowgli, a man-cub fostered by wolves, is forced to flee the jungle, and he embarks on a journey of self-discovery with the help of the panther, Bagheera, and the free-spirited bear, Baloo.

For ten years, engineer Bill Markham has searched tirelessly for his son Tommy who disappeared from the edge of the Brazilian rainforest. Miraculously, he finds the boy living among the reclusive Amazon tribe who adopted him. And that's when Bill's adventure truly begins. For his son is now a grown tribesman who moves skillfully through this beautiful-but-dangerous terrain, fearful only of those who would exploit it. And as Bill attempts to "rescue" him from the savagery of the untamed jungle, Tommy challenges Bill's idea of true civilization and his notions about who needs rescuing.

Tarzan, having acclimated to life in London, is called back to his former home in the jungle to investigate the activities at a mining encampment.

A boy and his dog, White Fang, must try to save the noble Haida tribe from evil white men in turn-of-the-century Alaska.

Xixo is back again. This time, his children accidentally stow away on a fast-moving poachers' truck, unable to get off, and Xixo sets out to rescue them. Along the way, he encounters a couple of soldiers trying to capture each other and a pilot and passenger of a small plane, who are each having a few problems of their own.

Two tough Kentucky mountaineers join a trading expedition from St. Louis up the Missouri River to trade whisky for furs with the Blackfoot Indians. They soon discover that there is much more than the elements to contend with.