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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).
List of animal names. Mother sea otter with sleeping pup, Morro Bay, California. In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans, an essay on ...
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs.
The word "invertebrate" comes from the Latin word vertebra, which means a joint in general, and sometimes specifically a joint from the spinal column of a vertebrate. The jointed aspect of vertebra is derived from the concept of turning, expressed in the root verto or vorto, to turn. [5] The prefix in- means "not" or "without".
Placozoa. Placozoa (/ ˌplækəˈzoʊə / PLAK-ə-ZOH-ə; lit. 'flat animals') [3] is a phylum of marine and free-living (non-parasitic) animals. [4][5] They are blob-like animals composed of aggregations of cells. Moving in water by ciliary motion, eating food by engulfment, reproducing by fission or budding, placozoans are described as "the ...
Get a daily dose of cute photos of animals like cats, dogs, and more along with animal related news stories for your daily life from AOL.
Portal:Zoology. Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia (/ ˌænɪˈmeɪliə /). 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.
Tardigrade. Tardigrades (/ ˈtɑːrdɪɡreɪdz /), [1] known colloquially as water bears or moss piglets, [2][3][4][5] are a phylum of eight-legged segmented micro-animals. [2][6] They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them Kleiner Wasserbär ('little water bear'). [7]