Crab-eating macaques. Effing aggressive little shits, they are.
While visiting a temple near by (where bunches of these fuckers are living there all wild and free), i was attacked several times by these, making me shit my pants and run faster than the road runner (and no, i didn't provoke any attack). My older brother said that people would always mock them in pretending to have food (without feeding them eventually) which causes their aggression. I'd rather say the aggression comes from feeding them in the first place.
Whatever, though - you can see me playing with deadly snakes and enormous sharks and giant tigers and all those dangerous animals - but sweet Jesus, MONKEYS scare the shit outta me. 8D