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More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
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 .
List of bats by population – Chiropterans. List of elephant species by population – Elephants. List of marsupials by population – Wombats, koalas and kangaroos. List of lagomorphs by population – rabbits, hares, and pikas. List of other Afrotheres by population – seacows, sengis, golden moles, otter shrews, tenrecs, hyraxes and the ...
Print/export Download as PDF; ... Lists of organisms by population List of birds by population ... Amongst the world's top 25 most endangered primates.
Most species do not have population estimates, though the roe deer has a population size of approximately 15 million, while several are considered endangered or critically endangered with populations as low as 200.
animal feed, racing, research, show, pets Tame, significant physical changes Common in the wild and in captivity 1d Rodentia: Fancy rat or laboratory rat (Rattus norvegicus domestica) Brown rat (Rattus norvegicus) the 19th century CE [53] the United Kingdom: animal feed, research, show, pets Tame, some physical and psychological changes
Print/export Download as PDF; Printable version; In other projects ... List of New World barbets; List of nocturnal animals; List of animals by number of neurons; P.
75% of the tigers in the world belongs to India. 13 countries including India, Bangladesh, Myanmmar, Bhutan, China, Russia have taken a misson to double the worldwide tiger population by the year 2022. [26] Island fox: Urocyon littoralis: 4,001 [27] NT [27] Sunda clouded leopard: Neofelis diardi: 4,500 [28] VU [28] [28] Maximum estimate. [6 ...