Lizard skin advantages and disadvantages

Lizards mainly grow in Southeast Asia (Indonesia, Thailand, etc.). Lizards have different habitats. They live underground, on the surface or in tall vegetation. They can be found in deserts and islands. They are a rare natural animal. It cannot be bred and it is difficult to find a complete skin, so the requirements for the selection of leather materials are very high. Because the material extraction and production process require a huge investment, the precious value of lizard leather bags is comparable to gold, which also creates lizards. Leather bags have an unshakable status among celebrities. This is its shortcoming.

But lizard skin also has advantages that are different from other leather materials. For example, the leather has different grains and grain patterns, and is attached with scales. It has a beautiful three-dimensional grain pattern after being made. It is lightweight, does not occupy water, and does not stick to the skin. Sweat; the leather is soft, and the leather goods made from it feel soft, comfortable and durable, high-end and tasteful. It has been favored by many celebrities. Lizard - a cold-blooded reptile

Lizard (Lizard) is commonly known as "four-legged snake" or "snake aunt" and is distributed all over the world. They are cold-blooded reptiles with many types. There are about 3,000 species distributed on the earth, and there are more than 150 species known in my country. Most of them are distributed in the tropics and subtropics. Their living environments are diverse, mainly terrestrial, but also arboreal, semi-aquatic, and burrowing in the soil. Most feed on insects, but a few species also eat plants. Lizards are oviparous, and a few are ovoviviparous. Lizards and snakes are closely related. They have many similarities. The whole body is covered with horny scales derived from the epidermis. The cloacal anal opening is a transverse slit. Both males have a pair of copulatory organs. Both are oviparous (or have partial ovoviviparous species), the square bones can move.

Main Features

Lizards are the most diverse group of reptiles. There are currently more than 4,000 known species in the world, mainly distributed in the tropics. Sizes vary greatly, from Caribbean geckos that are several centimeters long to Komodo dragons that are nearly 3 meters long. Lizards

Some species, called basilisks, have degenerated feet, leaving only traces of their structure. They can be distinguished from snakes because they have eyelids and ears.

Many lizards, such as chameleons, can change their color in response to environmental changes or stress.

Most species are carnivorous and feed on insects, earthworms, snails, and even mice. But there are also those that feed on cacti or seaweed as their staple food, or that are omnivorous.

The collective name for reptiles of the suborder Sauria. The closely related suborder Serpentes together account for 95% of all extant reptiles. It is divided into 18 families and more than 3,000 species. The tropical regions have the greatest variety and quantity. It is found from the Arctic to southern Africa, South America and Australia. Lizards have the greatest variation in body shape and size among reptiles. Body length ranges from 3 centimeters (1 inch, gecko) to 3 meters (10 feet, monitor lizard). The lightest person weighs less than 1 gram, and the heaviest person weighs more than 150 kilograms. The body is mostly slender, with a long tail, and often has 4 limbs. In addition to the nostrils, mouth, eyes and cloaca opening, the body surface is covered with scales, and has a pair of eyes and a pair of ear holes. If there is no external ear hole, the tympanic membrane is located on the surface, and some have bony scales in the dermis under the head and body scales. The surface of the scales is covered with a layer of keratin.

Some lizards have scaly organs, with serrated edges of the scales protruding bristles, which may be used for touch. Many lizards, especially chameleons and anoles, can change their body color from bright green to dark chocolate brown, and lines and stripes on their bodies can also appear and disappear. The discoloration mechanism is the movement of pigment granules in melanocytes. When the granules are concentrated, the color is lighter, and when the granules are dispersed, the color is darker. Some lizards have stretchable skin folds on their necks, horns or helmets on their heads, or spines or wrinkles on their throats. The front of the skull is made of thin cartilage and membranes. The eyelids are mostly movable, and there is a thin vertical orbital interval between the two eyes. There is a temporal hole on the bone rod formed by the postorbital bone and the squamous bone. The upper palate can move relative to the other parts of the skull, has square bones, and can open the mouth wide to swallow prey.

Food

Most lizards feed on insects and some rodents, and occasionally poultry. Their teeth are sharp and have three cusps. Herbivores (such as iguanas) have broad, leaf-shaped tooth crowns with serrated incisal edges. Those who feed on molluscs and crustaceans (such as Caiman lizards [Dracaena]) have blunt, rounded teeth at the back of the palate for crushing. The Gila monster in the southwestern United States and its Mexican relatives (genus Heloderma) are venomous. They bite when provoked, but are rarely fatal. There are longitudinal grooves or folds on the inside of each tooth on the lower jaw to draw out venom. The teeth of most lizards are born on the edges of the upper palatine bone, prepalatal bone and dental bone, and a few species are born on the palate. There are "egg teeth" on the anterior palatine during the embryonic stage, which protrude forward from the snout and are used to drill through the egg shell. They degenerate after hatching. The way the teeth are inserted is mostly lateral, and some are apical. The two eyes can move independently. Many lizards have salt glands to excrete mineral salts. Shoulder straps present.

Movement

Lizards Most lizards have four legs and strong hind limb muscles. They can run quickly and change running direction quickly. Cnemidophorus can reach speeds of 24 kilometers (15 miles) per hour.

There are several families of lizards with elongated bodies, shortened limbs, or even no limbs. Geckos, Iguanas (Uta) and Acanthodactylus have multiple edges on their toes to increase their surface area and prevent them from sinking into the sand. Geckos can crawl on vertical glass panels.

Each foot has 5 toes, which are divided into two inner and outer groups by means of webs made of skin. The 3 toes on the outside of the hind limbs and the 2 toes on the inside form a group. The opposite is true for the forelimbs. The male body has paired communication organs. ─Hemipenis. King lizards can run across short distances across water.

The difference between lizards and snakes

Some people think that the difference between lizards and snakes is that lizards have four legs, while snakes have no legs. A pair of claw-like hind limbs can be found on both sides of the cloacal anal opening of some pythons; in basilisks, there are no traces of feet in their appearance, so people often mistake them for snakes.

In terms of easy-to-recognize features, the differences between lizards and snakes are:

1. The left and right halves of the lizard's mandible are joined by sutures and cannot move, and the mouth cannot be opened wide. The left and right halves of the snake's mandible are connected by ligaments and can be pulled apart from each other. This is one of the reasons why the snake's mouth can be opened wide.

2. Lizards generally have four limbs, and even those that have lost all limbs must have remnants of the forelimb girdle (shoulder girdle) in their bodies. Snakes generally do not have limbs, and even if there are species with remnants of hind limbs, there are absolutely no remnants of forelimb girdle in their bodies.

3． Lizards mostly have movable upper and lower eyelids, and their eyes can open and close freely. The snake's upper and lower eyelids heal into a transparent film that covers the eyes. It seems that the snake's eyes are always open.

4. The tongues of most species of lizards are wide and thick. Snake tongues are very long and slender, with the front end deeply bifurcated and the base located in the sheath. They often extend and contract through the notch at the front of the mouth to collect "odor" molecules from the outside world (mainly food) and send them to the nose pick. Produces the sense of smell.

5． Lizards generally have external ear holes, and even if they don't, the location of the eardrum can be seen from the outside. Snakes have no external ears or eardrums, so there are no traces of hearing organs on the outside.

6. The tails of lizards are all long, generally about equal to (or only slightly shorter than) the length of the head and body, or 2 to 3 times the length of the head and body. The tail of a snake is relatively short, ranging from 1/2 to 1/4 of the body length (that is, the tail length accounts for 1/3 to 1/5 of the total length).