Some lizards have big, strong legs while some have none at all. Several families of lizards show some form of limb reduction. Males belonging to the family Dibamidae have limbs that look like flaps, while the females have no limbs at all. The large Australian shingle back skink has well developed limbs, whereas the cylindrical skink from North Africa has tiny limbs.
Limbless lizards include those that are active on the surface such as the slow worms and the burrowers. The burrowers may be sand dwellers, or they may be found where leafy matter lies. The cylindrical skink is a sand dweller, while the Bachia is found in leafy litter. Limbless lizards move on the surface like snakes. Lizards with little limbs also move like snakes, but they use their much reduced limbs while moving slowly. They burrow by pushing the head through the soil or the litter. The scales on the head of these lizards are reduced in number of fused with one another to make the skull tough. Limbless lizards are seen in India too.