"Tarzan's tribe of apes is known as the Mangani, Great Apes of a species unknown to science." - I thought it was gorillas.
Jane and Tarzan "have one son, Jack, who takes the ape name Korak ("the Killer")." - Did not know they had a son.
"...his favored food is raw meat, killed by himself; even better if he is able to bury it a week so that putrefaction has had a chance to tenderize it a bit." - I knew that he did not like to cook, I did not know about the other thing.
"Rudyard Kipling's Mowgli has been cited as a major influence on Edgar Rice Burroughs' creation of Tarzan." - Did not know this.
"He has wrestled full grown bull apes and gorillas, lions, rhinos, crocodiles, pythons, sharks, tigers, man-size seahorses (once) and even dinosaurs..." - You are not a man until you wrestle a dinosaur. ;)
"He learns a new language in days, ultimately speaking many languages, including that of the great apes, French, Finnish, English, Dutch, German, Swahili, many Bantu dialects, Arabic, ancient Greek, ancient Latin, Mayan, the languages of the Ant Men and of Pellucidar." - Interesting, right +Amir Aharoni
"In Tarzan's Quest (1935), he was one of the recipients of an immortality drug at the end of the book that functionally made him immortal." - Jumping the shark. ;Phttps://en.wikipedia.org/wiki/Tarzan