King Kong (1976)

When a research ship is sent to explore an island thought to be rich in oil, paleontologist Jack Prescott sneaks aboard, having heard strange rumors about the island. En route, the crew rescues Dwan, the sole survivor of a shipwreck. When they arrive, they find native people living in fear of a monster called Kong. The natives kidnap Dwan and sacrifice her to what turns out to be an enormous ape. Dwan is eventually rescued, and the ape captured for a gala exhibit.

A giant ape King Kong, which was shot and fell off the World Trade Center tower, appears to be alive, but is in coma for 10 years and desperately needs a blood transfusion in order to have an artificial heart implanted. Suddenly, in the rainforest, another gigantic ape is found - this time a female. She is brought to the USA, and the heart is successfully implanted. But then King Kong, having sensed the female ape, breaks loose.