Lizard

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hello friends,
                 today we  are talk about Lizard...
Scientific name: Lacertilia
Phylum: Chordata
Rank: Suborder
Higher classification: Scaled reptiles
Lizards are a widespread group of squamate reptiles, with over 6,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains.Rather than present a detailed anatomical report of a lizard, this section discusses certain structures that are either characteristic of lizards in general or specializations of certain groups.The skull is derived from the primitive diapsid condition, but the lower bar leading back to the quadrate bone is absent, however, giving greater flexibility to the jaw. In some burrowers (such as Anniella and the worm lizards) as well as some surface-living forms (such as the geckos), the upper and lower temporal bars have been lost. Small burrowing lizards have thick, tightly bound skulls with braincases that are well protected by bony walls. In most lizards, the front of the braincase is made up of thin cartilage and membrane, and the eyes are separated by a thin, vertical interorbital septum. In burrowing forms with degenerate eyes, the septum is reduced and adds to the compactness of the skull. Most lizard skulls, particularly in the Scleroglossa, are kinetic (that is, the upper jaw can move in relation to the rest of the cranium). Since the anterior part of the braincase is cartilaginous and elastic, the entire front end of the skull can move as a single segment on the back part, which is solidly ossified. This increases the gape of the jaws and probably assists in pulling struggling prey into the mouth.
Lizards are found all over the world in almost every type of terrain. Some live in trees; others prefer to live in vegetation on the ground, while others live in deserts among rocks. For example, the Texas horned lizard is found in the warm areas with little plant cover in southern North America. The northern fence lizard, on the other hand, likes to live in cool pine forests in northern North America. Some lizards are territorial, while others can easily live with dozens of other lizards of many different species. Other than mating times, most lizards are not social, though. There are some exceptions. For example, the desert night lizard lives in family groups, according to research by the University of California.
A lizard's scaly skin does not grow as the animal ages. Most lizards shed their skin, or molt, in large flakes. Lizards also have the ability to break off part of their tails when a predator grabs it.
Frill neck lizards have a large, round collar of skin that pops up when they are trying to intimidate attackers.
The green basilisk lizard can run on water at about 5 feet (1.5 m) per second for 15 feet (4.5 m), or more according to National Geographic. Their special feet give them more surface area to hold them up and as they run, they create air bubbles that keep them afloat. 
Chameleons' tongues are longer than their bodies, and their eyes can look in two different directions at once.
You can shine a light in a banded gecko's ear and the light will come out the other side, according to the American Museum of Natural History.
Two species — the Mexican beaded lizard of western Mexico and the Gila monster of the southwestern United States and northwestern Mexico, are venomous, according to Encyclopedia Britannica. 
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