It stings and bites at the same time and has killed humans and it’s only a tiny ant (well big ant).
The bulldog ant from Australia is the most dangerous ant in the world, they have different ants within the colony which perform the various duties which are necessary to make up a smooth running existence.
Ants are one of the most efficient and social insects in the world, and the bulldog ant are generally brown, red and/or black and measure up to 1 1/2 inches in length (the largest of any ant species).