Lizards:

Lizards are reptiles of the suborder Lacertilia (or Sauria), esp those of the family Lacertidae (Old World lizards). Most of them have an elongated body, four limbs, and a long tail: including geckos, iguanas, chameleons, monitors, and slow worms.

They are Ordered in the following Families:

• Geckos (lat. gekkonidae)
• Snake Lizards (lat. pygopodidae)
• Dragon Lizards (lat. agamidae)
• Goannas or Monitor Lizards (lat. varanidae)
• Skinks (lat. scincidae)

Geckos are small insectivorous terrestrial lizards of the family Gekkonidae which only live in warm regions.
The digits have adhesive pads, which enable these animals to climb on smooth surfaces. Their eyes are covered by a transperent spectacle, which is shed with the skin and have not moveable eyelids.

Snake Lizards are closely allied to the geckos without forelimbs and their hindlimbs are not obvious or normal, but represented by a scaly flap just above the vent.

Dragon Lizards are large lizards, esp the Komodo dragon, most with tubercles and spines on their body.
All agamids are oviparous, laying from two to more than 20 eggs in a clutch, according to the species.
Near all species are arthropods eaters.

Goannas are very large Lizards with well-developed and powerful limbs, a deepley forked tongue like that of a snake which is flicked in and out constantly when the lizard is alert.

Skinks are the largest family of lizards in Australia, their complexion varies enormous in body form, size and habits. The smallest forms are insectivorous and only some larger species are omnivorous.
Most skinks have limbs, but if the limbs are absent the eyes are very small and they usually have moveable eyelids.The species that look like snakes have pupils which are not a narrow vertical slit in daylight and the scales on the body are imbricate. All species have a short, relativly broad and fleshy tongue.