Pentatomidae, commonly known as stink bugs, are a family of insects within the order Hemiptera. They are characterized by their shield-shaped bodies and can vary in color, often appearing green, brown, or gray. Stink bugs are known for their ability to produce a foul-smelling liquid as a defense mechanism when threatened. These insects primarily feed on plant sap, using their specialized mouthparts to pierce plant tissues. Pentatomidae can be found in various habitats, including gardens, fields, and forests, and some species are considered agricultural pests due to their impact on crops.