Stink bug is a kind of insect that gives off a foul odor when disturbed. The stink bug’s body is shaped like a shield. Each of the bug’s two antennae is made up of five sections. Some species (kinds) of stink bugs eat only plants, some eat only other insects, and some eat both plants and insects. Many species of stink bugs attack plants that are not economically important. However, some species attack apples or other crops. The brown marmorated stink bug of Asia has become a major pest in much of the United States.