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For other uses, see Animalia (disambiguation). Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.
- Kingdoms
The hierarchy of biological classification's eight major...
- Bilateria
Bilateria (/ ˌ b aɪ l ə ˈ t ɪər i ə /) is a large clade or...
- Animal (Disambiguation)
People. The Animal (nickname), a list of people nicknamed...
- Animalia (Disambiguation)
Language links are at the top of the page across from the...
- Tardigrada
Naming Johann August Ephraim Goeze. Johann August Ephraim...
- Arthropoda
Arthropoda is the largest animal phylum with the estimates...
- Kingdoms
- Grouping Animals
- Life Styles
- Everyday Language
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There are many different types of animals. The common animals most people know are only about 3% of the animal kingdom. When biologists look at animals, they find things that certain animals have in common. They use this to group the animals in a biological classification. Several million species may exist, but biologists have only identified about...
The animal mode of nutrition is called heterotrophic because they get their food from other living organisms. Some animals eat only plants; they are called herbivores. Other animals eat only meat and are called carnivores. Animals that eat both plants and meat are called omnivores. Some animals get their energy from photosynthetic protiststhat live...
In scientific usage, humans are animals. But in everyday use, humans are often not regarded as animals.
Ethology, the study of animal behaviourLou Henry Hoover (March 29, 1874 – January 7, 1944) was the first lady of the United States from 1929 to 1933 as the wife of President Herbert Hoover. She was active in community groups, including the Girl Scouts of the USA, which she led from 1922 to 1925 and from 1935 to 1937. She was the first woman to earn a geology degree from Stanford.
Animals form a single clade. Over 1.5 million living animal species have been described—of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft).
Animals are multicellular eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.
Dog breeds vary widely in shape, size, and color. They perform many roles for humans, such as hunting, herding, pulling loads, protection, assisting police and the military, companionship, therapy, and aiding disabled people.
List of animal phyla is a list of the major groups of animals usually classified as a phylum. Modern sources have been used: the list is different from that of Linnaeus or Cuvier . A list of this type may be arranged alphabetically; equally it might be arranged according to evolutionary relationships.