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Animals are multicellular, eukaryotic organisms of the kingdom Animalia (also called Metazoa). The animal kingdom emerged as a clade within Apoikozoa as the sister group to the choanoflagellates. Animals are motile, meaning they can move spontaneously and independently at some point in their lives. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later in their lives. All animals are heterotrophs: they must ingest other organisms or their products for sustenance. Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago. Animals can be divided broadly into vertebrates and invertebrates. Vertebrates have a backbone or spine (vertebral column), and amount to less than five percent of all described animal species. They include fish, amphibians, reptiles, birds and mammals. The remaining animals are the invertebrates, which lack a backbone. These include molluscs (clams, oysters, octopuses, squid, snails); arthropods (millipedes, centipedes, insects, spiders, scorpions, crabs, lobsters, shrimp); annelids (earthworms, leeches), nematodes (filarial worms, hookworms), flatworms (tapeworms, liver flukes), cnidarians (jellyfish, sea anemones, corals), ctenophores (comb jellies), and sponges. The study of animals is called zoology.

The White Sheep and Its Lamb Colouring Pages For Kids

The White Sheep and Its Lamb Colouring Pages For Kids

About The White Sheep and Its Lamb Colouring Pages For Kids Sheep is a medium-sized beast that has a very fluffy fur. These beasts are...
Pampered Sheep and Its Lamb Colouring Pages Printable For Kids

Pampered Sheep and Its Lamb Colouring Pages Printable For Kids

About Pampered Sheep and Its Lamb Colouring Pages Printable For Kids Since from childhood we have been introduced with sheep. Why not, this cute fluffy...
Naugthy Squirrel And Its Kits Colouring Pages Printable For Kids

Naugthy Squirrel And Its Kits Colouring Pages Printable For Kids

About Naugthy Squirrel And Its Kits Colouring Pages Printable For Kids The squirrels and their children are the animals that live on the tree. The...
Very Noisy Duck Colouring Pages for Kids

Very Noisy Duck Colouring Pages for Kids

About Very Noisy Duck Colouring Pages for Kids Many people love ducks. Ducks seem to be good friends for chickens. If there is a duck,...
Very Slimy Earthworm Colouring Pages for Kids Printable

Very Slimy Earthworm Colouring Pages for Kids Printable

About Very Slimy Earthworm Colouring Pages for Kids Printable Just talk about earthworm it feels like a lot of the boys who love it. But...
Very Cute Little Kitten Colouring Pages for Kids

Very Cute Little Kitten Colouring Pages for Kids

About Very Cute Little Kitten Colouring Pages for Kids Many people like kittens. Due to its spicy, cute and soft-haired nature it has become the...
Very Talkative Magpie on the Tree Colouring Pages

Very Talkative Magpie on the Tree Colouring Pages

About Very Talkative Magpie on the Tree Colouring Pages The magpie bird is one of the smartest animals in the world. This interesting fact you...
Beautiful Shells Colouring Pages for Kids Printable

Beautiful Shells Colouring Pages for Kids Printable

About Beautiful Shells Colouring Pages for Kids Printable Shell is a very beautiful thing. Usually when it comes to the beach, the children will pick...
Catfish Colouring Pages for Kids & Printable

Catfish Colouring Pages for Kids & Printable

About a Wild Catfish Colouring Pages Catfish is one of the most famous fish in the world. It can be said that everyone knows catfish...
52 Amazing Lists of Animals Colouring Pages by Picolour.com

52 Amazing Lists of Animals Colouring Pages by Picolour.com

The Importance of Plant and Animal Biodiversity Biodiversity is defined as the diversity of living organisms from various sources of land or ocean and others...
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