Siafu Ants

These ants are also known as driver ants. They come in swarms of up to 50,000,000, and will react as if they are a single entity if even one driver ant is in danger. Crush one of these little critters underfoot while you are out on a walk and you will regret it as the other 50 million come swarming after you. The ones that latch on will be very hard to remove. Their jaws will remain clamped into your flesh even if you tear their bodies in half. While they may not be the most deadly critters on this list, they are certainly impressively dangerous for their size. They routinely take down and kill much larger things. Look up ant attackand you will find many photos of this phenomenon.