Ant is an insect with social life habit, belonging to Hymenoptera. Antennas of ants are obviously knee-shaped, and there are one or two nodules in the abdomen. Generally speaking, they have no wings. Only males and infertile females have wings during mating, and females lose their wings after mating. Ants are completely abnormal insects, and they only develop into adults through the stages of eggs, larvae and pupae. Ants have no ability in the larval stage and do not need to eat. They are completely fed by worker ants. Worker ants take care of queens and larvae in the first few days after they develop into adults, and then gradually begin to do more complicated work, such as digging holes and collecting food. Some kinds of worker ants are different in size, with developed heads and big teeth, and are often responsible for fighting and defense.