Starfish

Any marine invertebrate of the class Asteroidea (phylum Echinodermata) with rays, or arms, around an unclear central disc is known as a sea star. They are not fish, despite their former common name. The estimated 1,600 live species of sea stars can be found in all oceans, with the highest diversity in the northern Pacific. The majority of species are 20 to 30 cm (8 to 12 inches) across; but, some are as little as 1 cm (0.4 inch) and others as large as 65 cm (25 inches).Sea star arms are hollow and covered with small spines and pedicellariae (pincerlike organs) like the disc; on the lower side are grooves with rows of sucker-tipped or pointed tube feet (see video of tube foot anatomy and physiology). One or more of a sea star's arms can be lost and replaced. It can move in any direction and stick to steep surfaces thanks to its tube feet.

         

  

Whale

 Any of the bigger species of aquatic animals that belong to the Cetacea order. The name whale can refer to any cetacean, including porpoises and dolphins, but it is most commonly given to those that are longer than 3 metres (10 feet). The 2.7-metre tiny sperm whale (Kogia simus), which bears a striking likeness to its larger cousin, is an exception. Whales are the heaviest living or fossil creatures, with the blue whale (Balaenoptera musculus) reaching a maximum size of potentially more than 30 metres and 200 metric tonnes (220 short [US] tonnes.Except for the landlocked Caspian and Aral seas, whales can be found in all of the world's oceans and seas, from the Equator to the arctic ice. They are mammals with the following characteristics: they breathe air, are warm-blooded, give live birth, suckle their young with milk, and have hair. All are totally aquatic, with particular adaptations for living in water such as flippers and tail flukes. Whales must surface to breathe on a regular basis, allowing them to eject more air from their lungs than most mammals in an almost explosive breath known as a blow. The water vapor in the whale's hot breath condenses when the blow is released, making the blow visible.

              

Shark

Shark, any of the several predatory cartilaginous fish species that make up the order Selachii (class Chondrichthyes). Sharks, along with rays and skates, make up the Chondrichthyes subclass Elasmobranchii. Sharks, on the other hand, are distinguished from other elasmobranchs by their fusiform body shape and the placement of their gill clefts on each side of the skull. Sharks have thick skin that is drab grey in color and roughened by toothlike scales, though there are exceptions.A muscular, asymmetrical, upturned tail; pointed fins; and a pointed snout extending forward and over a crescentic mouth equipped with sharp triangular teeth are all common features. Sharks do not have a swim bladder, so they must swim constantly to avoid sinking to the bottom. According to various authorities, sharks are classified into 14–30 families, with over 400 species in existence. Humans are at risk from a number of larger animals. Sharks are fished commercially in large numbers. Overfishing in the late twentieth and early twenty-first centuries, on the other hand, drastically diminished the populations of some shark species.

      

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.

 

                 

                                     

Tiger

 The tiger (Panthera tigris), the largest member of the cat family (Felidae), is only surpassed in size and ferocity by the lion (Panthera leo). The tiger is endangered across its range, which runs from the Russian Far East to the Indonesian island of Sumatra via North Korea, China, India, and Southeast Asia. The Siberian, or Amur, tiger (P. tigris altaica) is the largest, with a total length of up to 4 metres (13 feet) and a weight of up to 300 kilogrammes (660 pounds).The Indian tiger (P. tigris tigris), sometimes known as the Bengal tiger, is the most common, accounting for around half of the total tiger population. Males are larger than females, with a shoulder height of about 1 metre and a length of about 2.2 metres (excluding a tail of about 1 metre); weight is 160–230 kg (350–500 pounds); and southern tigers are smaller than northern tigers.Tigers in the Indo-Chinese (P. tigris corbetti) and Sumatran (P. tigris sumatrae) subspecies are vivid reddish tan with dark, almost black vertical stripes. The underbelly, inner sides of the limbs, cheeks, and a huge area over each eye are all white. Longer, softer, and whiter fur distinguishes the rare Siberian tiger. White tigers have been spotted on occasion, though not all of them are actual albinos, practically all of them in India (see also albinism).

Monkey

With the exclusion of lemurs, tarsiers, and lorises, a monkey is any of roughly 200 species of tailed primate. Monkeys are distinguished from apes by the presence of a tail (even if it is only a small nub), as well as their narrow-chested bodies and other skeleton traits. Although baboons and mandrills are significant exceptions, most monkeys have a small, generally flat face with little prominence of the muzzle. Tropical forests are home to the vast majority of animals, which move on all four limbs.During the day, all but the durukuli of tropical Central and South America are active, roaming in groups in search of plants, bird eggs, smaller animals, and insects to feed. Because monkeys can sit upright, their hands are free to do a variety of manipulating tasks. Monkeys, with the exception of a few Old World species, are primarily arboreal, leaping from limb to limb as they move through the trees. Both their hands and feet are utilized for grasping and contain five digits, with the thumb and big toe diverging from the others.The digits of most animals have flattened nails, while marmosets have claws on all of their digits save the big toe, which has a nail. Monkeys walk on the ground with their complete soles of their feet touching the ground but their palms up. They rarely walk on two legs (bipedally) and can only stand straight for brief periods of time, if at all.

                                           
           

Lion

 The lion (Panthera leo) is a huge, powerfully built cat of the Felidae family, second only to the tiger in size. The lion, the fabled "king of beasts," has long been one of the most well-known wild creatures. Lions are most active at night and can be found in a range of environments, but their preferred habitats include grassland, savanna, deep scrub, and open forest. They used to be widespread throughout most of Europe, Asia, and Africa, but currently they are mostly found south of the Sahara. In India's Gir National Park and Wildlife Sanctuary, an isolated group of about 650 Asiatic lions form a slightly smaller race that lives under extreme protection.The lion is a huge, muscular cat with short legs and a long body. The size and look of men and women differ significantly. The male's most distinguishing feature is his mane, which differs between individuals and communities. It can be completely absent, fringed around the face, or full and shaggy, covering the back of the head, neck, and shoulders and going across the throat and chest to join a fringe along the belly. The mane and fringe of certain lions are extremely dark, practically black, giving the animal a magnificent aspect.

                                                                     

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.

             

Cow

A domestic bovine, regardless of sex or age, usually of the species Bos taurus, is known as a cow. Mature females of various large mammals, including cattle (bovines), moose, elephants, sea lions, and whales, are given the moniker. Domestic cows are one of the most common agricultural animals worldwide, and the English language has multiple words to characterise them at various stages of development. Calf refers to a young cow. A female calf is commonly referred to as a heifer calf, whereas a male calf is referred to as a bull calf. A heifer is a female that has never given birth. Heifers are normally young females; nevertheless, after giving birth to her first calf, a heifer becomes a cow. A bull is a term used to describe an adult male. Castration is used to minimise aggressive tendencies in male cattle and make them more tractable. A herd is a collection of cows, cattle, or kine (an old name for more than one cow). Because English lacks a gender-neutral singular word, "cow" is used to refer to both females and domestic cattle.

Dog

DOG, Canis lupus familiaris is a domestic mammal belonging to the Canidae family (order Carnivora). It is related to foxes and jackals and is a subspecies of the grey wolf (Canis lupus). The dog is one of the world's two most common and popular domestic animals (the cat is the other). It has been a hunting companion, guardian, object of derision or affection, and friend to humans for over 12,000 years.

From the grey wolf, the dog has evolved into over 400 different breeds. Humans have played a significant role in the development of dogs that meet specific societal needs. Dogs were bred to amplify tendencies that were visible from their first contact with people using the most basic kind of genetic engineering. The original dogs were hunters with excellent senses of sight and smell, despite the lack of facts concerning their evolution. As need or desire emerged, humans developed these impulses and formed new breeds.

Cats

CAT (Felis catus), commonly known as house cat or domestic cat, is the smallest domesticated member of the Felidae family of the order Carnivora. Domestic cats have supple low-slung bodies, finely shaped heads, long tails that aid in balance, and specialised teeth and claws that fit them admirably to a life of active hunting, just like all felids. Cats, like their wild relatives, are primarily carnivorous, highly agile and powerful, and well-coordinated in their movements.

It's worth noting that the dog's predecessors were social creatures who lived in packs and were subordinate to a leader, and the dog has easily shifted its allegiance from pack leader to human master. The cat, on the other hand, has not succumbed to servitude as easily. As a result, unlike most domesticated dogs, the house cat is able to revert to complete self-reliance more rapidly and successfully. See carnivore for further information on the relationship between cats and other carnivores.