(1687) They also want to make us believe that Ants bite Human beings , and that its bite is poisonous .I have never been able to observe this , and it appears to me certain that the Ants mouth is not created for that purpose ; for oneMouth - parts of ant not fit to stinging .thing because the jaws , which are provided with Claws or teeth , and are placed around the mouth in the front of the head , cannot produce so much force as is required to press through our outer skin to our sensitive skin ; For the jaws are too short , and the Descartes had compared instinct with an inborn urge which had been added to the body ' s machinery by the Creator .