Chameleon

 Any of a group of mostly arboreal (tree-dwelling) Old World lizards notable for their ability to alter body colour (family Chamaeleonidae). Chameleons also have zygodactylous feet (toes fused into opposing bundles of two and three), acrodont dentition (tooth attached to the edge of the jaw), independent eyes, atrophied venom glands that produce harmless trace amounts of venom, and a long, slender projectile tongue. The false chameleon, commonly known as an anole, is a New World lizard belonging to the genus Anolis (family Iguanidae).Bradypodion, Brookesia, Chamaeleo, and Rhampholeon are the four genera of real chameleons. Some researchers have identified two additional genera (Calumma and Furcifer).chameleon, Any member of the Chamaeleonidae family of predominantly tree-dwelling Old World lizards, distinguished primarily by its ability to change body colour. Toes fused into opposite bundles of two and three, teeth linked to the jaw edge, glands secreting a weak, harmless venom, and a long, slender, extensile tongue are among the other characteristics. About half of the 150 species are unique to Madagascar; the rest are primarily found in Sub-Saharan Africa with a few exceptions. The majority of them are 7–10 in. (17–25 cm) length and have a flattened body from side to side. The bulged eyes move on their own. Each species can go through a specific range of colour changes. The major food source is insects, but larger species also eat birds.

          

Crocodiles

Crocodile, (order Crocodylia, or Crocodilia), any of 23 species of lizard-like amphibious creatures with a carnivorous diet that belong to the reptile order Crocodylia. Crocodiles have short legs with clawed webbed toes and formidable jaws with numerous conical teeth. They all have a distinctive body shape that allows the animal's eyes, ears, and nostrils to be visible above the water's surface while the rest of the body is submerged. The skin is thick and plated, and the tail is lengthy and huge.Crocodiles are the closest living cousins of birds and represent a live link to the dinosaur-like reptiles of past periods. A wide range of crocodilian fossils dating back 200 million years to the Late Triassic Epoch have been unearthed. Three significant radiations appear to have occurred, according to fossil data. Only one of the four crocodile suborders has survived to the present day. Crocodiles, alligators, caimans, and gavials are all members of the Crocodylia order.

         

 

Tortoise

Any member of the turtle family Testudinidae is known as a tortoise. Previously, any terrestrial turtle was called a tortoise. All testudinids have elephantine (or cylindrical) hind limbs and hind feet, with two or fewer phalanges in each digit in their forefeet and hind feet. The shell of most tortoises is high domed, with the exception of the pancake tortoise (Malacochersus tornieri). Some species' shells have a flattened base and are nearly spherical.Tortoises are only found on land, and they can be found on all continents except Australia and Antarctica. They also live on many islands, though many island populations and species have been extinct as a result of human settlement. Living tortoises are classified into at least 15 genera, with one of them, Geochelone, ranging from South America to Africa and Asia.Tortoises come in a variety of sizes, from the small padlopers (Homopus) of southern Africa with shell lengths of 10 to 15 cm (4 to 6 inches) to the giant tortoises (Geochelone) of the Aldabra and Galapagos islands with shells exceeding 1 metre (3.3 feet). Tortoises can be found in a wide range of environments, from deserts to humid tropical rainforest. The majority of tortoises are vegetarians who eat leaves, flowers, and fruits; however, some tortoise species that live in moist woodland settings are more opportunistic and eat animal stuff.

 

                 

                                     

Snake

Any of more than 3,400 species of reptiles characterized by their limbless state and enormously elongated body and tail are classified as snakes (suborder Serpents). Snakes are lizards in the order Squamata, and they represent a lizard that has undergone structural reduction, simplicity, and loss, as well as specialization, during the course of evolution. Although all snakes are devoid of external limbs, not all legless reptiles are snakes. Some burrowing lizards may only have front or back limbs, or they may be completely legless.Snakes, unlike lizards, do not have movable eyelids, which results in an unsettling look. Snakes don't have external ear holes, either. They've lost their urine bladder on the inside. The visceral organs are extended, with the left member shrinking in comparison to the right; the left lung is substantially decreased, if not completely eliminated. Snakes, on the other hand, have more vertebrae than other vertebrates and have created two novelties: a tracheal lung in the neck area and a venom-conducting system for subduing prey.