An insect has six legs. Insects' legs are jointed, and the movement of these joints is controlled by a combination of partial musculature and passive biomechanical non-muscular structures. Some insects also have a clawlike structure on the last segments of their legs.
All insects also have three major body regions, which typically consist of a head, a thorax and an abdomen. All insects also have bilateral symmetry. Insects begin their lives as eggs and undergo a metamorphosis before becoming adults. Winged insects have either one pair of wings (such as a housefly or a mosquito) or two pairs of wings (such as a bee or a dragonfly).