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Tardigrades (/ ˈ t ɑːr d ɪ ɡ r eɪ d z / ⓘ), [1] known colloquially as water bears or moss piglets, [2] are a phylum of eight-legged segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them Kleiner Wasserbär ' little water bear ' .
The Hypsibiidae are a family of water bears or moss piglets, tardigrades in the class Eutardigrada. [1] [2] [3] Subfamilies and genera. Subfamily Diphasconinae.
Heterotardigrades (class Heterotardigrada) is a class of the tardigrades (water bears) that have cephalic appendages and legs with four separate but similar digits or claws on each. 444 species have been described.
Ramazzottius is a genus of water bear or moss piglet, a tardigrade in the class Eutardigrada, named after the Italian zoologist Giuseppe Ramazzotti . Ramazzottius varieornatus (see image) is a terrestrial invertebrate that is extroardinarily tolerant of extreme conditions such as irradiation, chemicals, dehydration and high pressure. [ 2 ]
Most bears are 1.2–2 m (4–7 ft) long, plus a 3–20 cm (1–8 in) tail, though the polar bear is 2.2–2.44 m (7–8 ft) long, and some subspecies of brown bear can be up to 2.8 m (9 ft). Weights range greatly from the sun bear , which can be as low as 35 kg (77 lb), to the polar bear, which can be as high as 726 kg (1,600 lb).
Female bears, called sows, will hibernate to give birth and nurse their cubs. The family will them emerge from their den in the spring when the cubs are weaned and can survive on solid food ...
Bear 141 was shot and killed by park rangers on October 6, 2003, to allow retrieval of the bodies. The events leading up to the deaths are documented in the film Grizzly Man. Bear 409 (Also called Beadnose) is a wild brown bear residing in Alaska's Katmai National Park. Bear 409 was recognized in 2018 as part of a campaign on the park's social ...
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