Ants are small insects that live in colonies. They are members of arthropod family. They have well defined body parts to suit their work. Ants are highly developed colonized animals having a much disciplined life with very well defined distribution of labor. Ants have bodies covered with exoskeleton for protection from injuries from outside. Their bodies are well defined in three major parts, the abdomen, the thorax and the head. They have three pairs of legs with a pair of appendages on their head serving as pair of claws. The ants can move fast and are very good swimmers. The ants are divided in the workers, the soldiers and the queen. This is the structure of their nests and colonies where the queen reproduces, the soldiers defend and the workers work. Everyone has defined work and no ant ever does any work it is not supposed to do. The body structures are also to suit their work. The workers are having small bodies, the soldiers are having bigger bodies with stronger claws to fight, and the queen is the biggest having big belly to lay number of eggs.
Problems created by Ants
Maricopa harvester ant, will kill fast by poison: it only takes a few hundred stings for this ant to kill a human [compared to 1,500 for honeybees, assuming one is not allergic, and once one stings, the others will follow [they smell the alarm pheromones in the sting], so death will be fast.
Some, like the bullet ant, are not so toxic but much more painful. One is likely pass out from pain after the worst imaginable hour of life and then succumb to dehydration or shock. That goes for many of the other ants too.
The only ant that could potentially devour is Siafu, the African driver ant. The issue is that one is not moving, so they can attack. However, even a whole Siafu colony won’t reduce to bone like piranhas.