Fire Ants
The meanest fire ants that I have personally met in this world are in Long Bawan, Indonesia. When you would come near at all they would stand up on their hind legs and when you got close enough they would jump at you. Once they would bite, they were really hard to get off of you.
The fire ants in this picture are much less aggressive. These are the ones that live in our back yard. They still hurt when they bite, but at least they don't chase you down.


