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bear : any of a family of large heavy mammals of America and Eurasia that have long shaggy hair, rudimentary tails, and plantigrade feet and feed largely on fruit, plant matter, and insects as well as on flesh — Webster
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Bears are carnivoran mammals of the family Ursidae. Bears are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout the Northern Hemisphere and partially in the Southern Hemisphere. Bears are found on the continents of North America, South America, Europe, and Asia. Common characteristics of modern bears include large bodies with stocky legs, long snouts, small rounded ears, shaggy hair, plantigrade paws with five nonretractile claws, and short tails.
While the polar bear is mostly carnivorous, and the giant panda feeds almost entirely on bamboo, the remaining six species are omnivorous with varied diets. With the exception of courting individuals and mothers with their young, bears are typically solitary animals. They may be diurnal or nocturnal and have an excellent sense of smell. Despite their heavy build and awkward gait, they are adept runners, climbers, and swimmers. Bears use shelters, such as caves and logs, as their dens; most species occupy their dens during the winter for a long period of hibernation, up to 100 days. — Wikipedia
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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
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Why are giant pandas born so tiny?
on December 13, 2019 at 7:33 pm
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Florida's black bears remain off-limits from...
on December 13, 2019 at 3:50 pm
The Florida black bear will remain off-limits from hunters, but only for now.
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Around 35,000 years ago, Central Iberia had a...
on December 12, 2019 at 1:12 pm
A study just published by the journal Quaternary Science Reviews, headed by Nohemi Sala, an expert on taphonomy at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), presents the results of the investigations carried out in the cave site of Portalón del Tejadilla in Segovia, which confirm a cold and extremely arid climate at a latitude never previously documented in the Iberian Peninsula.
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How interacting with females increases aggression...
on December 12, 2019 at 1:06 pm
You probably behave differently when you are having a bad day than during a great one. For example, while you might politely smile at a neighbor you dislike on an otherwise pleasant Saturday afternoon, that same interaction will elicit a scowl when you are rushing off to work Monday morning. In other words, your brain takes recent experiences into account when coordinating your responses to external stimuli. Even simple animals, like the fruit fly Drosophila melanogaster, do this: Sometimes, a […]
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Study of elephant, capybara, human hair finds...
on December 11, 2019 at 4:00 pm
Despite being four times thicker than human hair, elephant hair is only half as strong—that's just one finding from researchers studying the hair strength of many different mammals. Their work, appearing in a paper publishing December 11 in the journal Matter, shows that thin hair tends to be stronger than thick hair because of the way that it breaks.