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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 .
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]
Most species in the list are officially designated. Some species hold only an "unofficial" status. Additionally, the list includes animals that were once official but are no longer, as well as animals recognized as national symbols or for other symbolic roles.
2. Acorn Woodpecker. These birds get their name from their unique habit of storing acorns in trees, which they use as a food source. Sometimes, they can store tens of thousands of them.
List of animals that can change color; List of cosmopterigid genera; List of crocodilians; List of animals culled in zoos; D. List of deadliest animals to humans ...
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 aardvark. List of rodents by population – cavies, squirrels, springhares, mice, beaver etc.
So far, scientists have proved that around 65 species of animals engage in behaviors similar to laughter, and most do so during playful activities. Most of them are primates, but also include ...
Image credits: BlueberrySympathizer There is an epidemic of animals in need of new homes. While there have (arguably) been some improvements in the situation over the years, things are still dire.