Anguidae is the name of a large and diverse family of lizards native to the Northern Hemisphere. The group includes the slowworms, glass lizards, and alligator lizards, among others. The family is divided into three subfamilies and contains 102 species in ten genera. They have hard osteoderms beneath their scales, and many of the species have reduced or absent limbs, giving them a snake-like appearance, although others are fully limbed.