Carpenter Ants (0.24 inches long) has become a widespread problem in the United States after they were accidentally introduced in the 1930s. Known for its large colony of ants in a mound shelter and aggressive, they attack in swarms after kissing pheromone released by the first ant stings. So if you are stung once, you have to get an attack characterized by the entire colony if you can not get away fast enough. small animals such as birds and larger mammals such as newborn calves often become victims because they can not escape in time before they devoured en masse. "