The 6 Basic Animal Groups (Animal species)

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Animals are a basic group of organisms called the animal kingdom. Animals are consumed because they feed on plants and some feed on weaker species. Animal species are divided into two large groups: vertebrates (ie, their body contains a spine) and invertebrates (ie, their body does not contain a spine). Vertebrates include mammals, birds, fish, reptiles and amphibians. Invertebrates account for 97% of animal species, including insects, crustaceans, spiders, spiders and many other species.

• Mammals

Mammals are among the least diverse species in the world and are only 5,000 species:
    Rodents such as mice, rats, water pig and others.
    The batches include bats.
    The zygotes include flies, moles and solenodonics.
    Primates include humankind.
    Ciliary cilia include fingers, whales and whales.
    Livers include dogs, cats, bears and seals.
Mammals are characterized by:
    Mammals multiply by birth.
    Milk is produced to feed its young.
    The mammalian body covers hair or fur.
    Of warm blood.
    Of vertebrates (that is, they have a spine).
    Its size is medium to large. They include the largest animals on earth such as finch whales and elephants.

• The birds

Birds are scattered all over the world and are able to live in different environments and are able to live with humans and are divided into many groups including: penguins, ostriches, doves, pelicans, anxieties, chickens and others.
Birds are characterized by:
Her wings help her fly.
They have toothless beaks.
Its structure is light brown.
Her body covers the feathers, which distinguishes them from other animals that fly like bats. Owing to feathers on bird wings and tail, they can balance the air and land easily. However, there are types of birds that can not fly like chickens, ostriches and others.

• Fish

 She is the first vertebrate to appear and live in water. They are characterized as:
     It has gills for snorkeling and this is what distinguishes it from other animal species.
     The scales cover her body.
     Her fins help her swim.
     Fish reproduce in eggs.
     There are many different and exotic fish, including blind ones with a hose such as the elephant and crawling ones. There are three main types of fish: bone fish (including familiar species such as tuna); cartilaginous fish (including sharks, rays and sleds) Fishes and eels).

•   Amphibians

Amphibians have been on Earth for nearly 370 million years.
Amphibians are produced in water in the form of eggs.
When hatching breathes through gills like fish.
At puberty, her lungs develop and she can live on land. Amphibian species include frogs, pygmy serpents, watermelons and salamanders. Amphibians remain close to water to keep their skin moist and egg white.

• Reptiles

It is one of the types of animals that creep to move and move, and there are currently only four types of reptiles: Crocodiles and head rack and hospitals, including snakes and finally the turtle.
Invertebrates
There are a million known species of invertebrate species including:
Sponges belong to the Division of porcupines.
Javanese such as coral and sea anemones.
Flatworms such as tapeworms.
Nectar such as Ascaris.
Skin urchins such as starfish, sea urchin and sea cucumber.
Amphibians , Birds , Fish , Invertebrates , Mammals , Reptiles