Vertebrates

Fishes are vertebrates that live in water. They are cold blooded animals, which means in temperature changes depending on the temperature of their surroundings. They have a body shape adapted for living and moving in aquatic habitats their bodies are protected with scales the tail is used for locomotion while fins are used for steering and maintaining balance through their gills they mostly undergo external fertilizations have many smaller groups they are jawless fishes which include lampreys and hagfishes. Their mouth are equipped with sharp teeth which enable them to clean and attach to other fishes. Defeat on other fish sucking out their fluids and drawing out their internal organs, sharks race and skates are cartilaginous fishes. Their skeleton is made of cartilage instead of bones. They are mostly found in warm, tropical seas. Sharks live in the open part of the sea and are considered the ultimate hunters while race and skates live at the bottom of the sea and are not as aggressive as sharks.

The largest group of fishes have bony skeletons they are the most diverse fish groups most of the fishes you know belong to this group such as milkfish or tilapia and salmon. Boney fishes live in almost every aquatic environment salt water and freshwater. They have a gas field sack known as a swim bladder which helps them maintain balance their gills are covered and protected with a flap called operculum

The word amphibia means double lives, which refer to the ability of the animals to live in both land and water. Frogs toads and salamanders are amphibians, p they are also cold blooded animals which means their temperature depends on the temperature of their surroundings. They feed on insects worms and other animals. in order to live in both land and water amphibians have legs instead of fins as well as lungs for beating air most amphibians have thin soft and slime skin which is also used for breathing. The moist surface of their skin enables to absorb oxygen from the air. Because of the need to keep their skin moist amphibians are usually found in wet environments such as ponds or swamps. In hot and dry days they may bury themselves in months to prevent a skin from drying up

Reptiles are cold blooded animals they can also live in both water and land although they are more adapted and can live on land for long period of times this is because they have developed lungs as well as body structures that enables them to fully live in on land. A reptiles body is covered with dry skin and hard scales this prevent the loss of from water from the body to evaporation. Their eggs of literary shells which makes them adapted for developing on land.

snakes are reptiles without legs covered with scales they do not have ears and only here by sensing vibration on surface they can swallow phrase that are larger than their mouth because their jaws can stretch contra contrary to common belief only a few snakes are poisonous however they can still make cause injuries with their fangs and flexible body. Lizard have scales like snakes but they have legs they can climb trees and hold on to objects with other toes the microscope hairs on their feet enables some them to climb walls and walk on ceilings without falling. Turtles and tortoises are special reptiles because of their soft body is covered with a shell made of bones their backbone and weaves are attached to the cell some turtles have strong mix that they use to capture food they can also live to more than a hundred years. Birds are warm blooded animals they are able to regulate their body temperature the remain active in cold and warm climates they have a respiratory system that includes air sacs which gives them a unique mechanism of breathing most birds can fly with the exception such as emu penguin and kiwi even chickens can fly short distances this is because birds have very light bodies which consists of hollow bones they also process flight feathers found in wings and tails which are arranged in a way that help carry and lift their bad their bird up in the air different birds have different body structures that helps them adapt to their environment perching birds, these birds have feet that are found in such way that they can easily clasp a tree branch their beaks are long thins and strong enough to crack nuts or open three works woodpecker sparrows larks and crows are perching birds. Water birds are birds have long and flat beak and web feet they stay in water most of the time to get their food examples are duck geese and swans flightless birds describe have small wings and big body so they cannot fly many flightless birds live in large open spaces in the desert and plaines an example is the ostrich that makes use of long legs for running and kicking its enemies. Birds of prey, hawks and eagles are birds of prey they have stronger beaks to tear their prey into pieces they have talents or sharp claws to grass and hold their prey

Mammals

The term mammals came from a give word mama which means breast they are the only group of animals in mammary glands which produce milk to nourish their young mammals, all mammals are warm blooded they are able to self regulate their internal temperature their bodies are covered in fear or hair that serves as protection they have more developed organ system to their heart has four chambers to efficiently circulate blood and a strong diaphragm assist their breathing most mammals have two sets of limbs use extensively for movement in obtaining food they also go two sets of teeth the first set being milk teeth which are then eventually replaced by a second set called permanent teeth for most mammals, the young develops inside the females body they are born in a form that resembles the parents such as the marsupials and placental mammals. you're young developed insider uterus with the placenta that gives the nourishment after a certain time they are born alive on the other hand marsupials are pouch mammals if their young in pouches as they continue to develop and go while in pouch the young suck their mother smell for nourishment koalas are marsupials. Sama mouse give birth to their aspiring by other means such as the monotremes such as the spiny anteater and duck billed platypus are egg laying mammals be sure more characteristics with reptiles than mammals are also not as develop