<P> Arctodus simus first appeared during the middle Pleistocene in North America, about 800,000 years ago, ranging from Alaska to Mississippi, and it became extinct about 11,600 years ago . Its fossils were first found in the Potter Creek Cave, Shasta County, California . It might have been the largest carnivorous land mammal that ever lived in North America . A giant short - faced bear skeleton has been found in Indiana, unearthed south of Rochester . It has become well known in scientific circles because it was the most nearly complete skeleton of a giant short - faced bear found in America . The original bones are in the Field Museum, Chicago . </P> <P> Arctodus pristinus inhabited more southerly areas, ranging from northern Texas to New Jersey in the east, Aguascalientes, Mexico to the southwest, and with large concentrations in Florida, the oldest from the Santa Fe River 1 site of Gilchrist County, Florida paleontological sites . </P> <P> In a recent study, the mass of six A. simus specimens was estimated, one - third of them weighed about 900 kg (1 short ton), the largest being UVP 015 at 957 kg (2,110 lb), suggesting specimens that big were probably more common than previously thought . It stood 8--10 feet (2.4--3.0 m) tall on hind legs while a large specimen would have been 11--12 feet (3.4--3.7 m) tall with a 14 - foot (4.3 m) vertical arm reach . When walking on all fours, it stood 5--6 feet (1.5--1.8 m) high at the shoulder: It was tall enough to look a man in the eye . At Riverbluff Cave, Missouri, a series of claw marks up to 15 feet (4.57 m) high have been found along the cave wall indicating short - faced bears up to 12 feet (3.66 m) tall . </P> <P> Researchers disagree on the diet of Arctodus . Analysis of bones from Alaska showed high concentrations of nitrogen - 15, a stable nitrogen isotope accumulated by meat - eaters, with no evidence of ingestion of vegetation . Based on this evidence, A. simus was suggested to have been highly carnivorous and as an adult would have required 16 kg (35.3 lb) of flesh per day to survive . Others point out that the species would have had a varied diet across its range, and that the short - faced bear's skull shares many features with herbivorous bears and likely did include some plant matter in its diet . </P>

What is the height and weight of the giant short-faced bear
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