It's obviously that nobody posting to this thread has ever read any of the original Tarzan books written by Burroughs.

The original Tarzan created by Burroughs spoke several languages fluently. He was intelligent and educated. His son, whose name was Jack, was not found in the jungle as an orphan.

And that stupid yodel comes from Johnny Weismuller, who was, in my opinion, the worst Tarzan of the movies ever. Oh, and the chimp, Cheetah, was entirely a hollywood creation.