Why is he called Donkey when there is nothing donkey about him.
There are several theries
1) it was supposed to be Monkey Kong but a mistake was made by nintendo and the name stuck
2) Shigeru Miyamoto, the character's creator, used the English word "donkey" to evoke the animal's stereotypical stubbornness. (There was no translation error; the game has the same name, "Donkii Kongu", in Japan.) "Kong" is because, in Japan, "King Kong" has become a generic term for any large ape.
Thus, Donkey Kong is a stubborn large ape.
3) Due to traslation error.
The second one is true I think
http://www.pliink.com/mt/marxy/archives/2007/01/my-donkey-kong.html