http://news.nationalgeographic.com/news/2011/02/110203-biggest-bear-largest-giant-short-faced-animals-science/, https://en.wikipedia.org/wiki/Arctotherium, https://en.wikipedia.org/wiki/Ursus_maritimus_tyrannus, https://commons.wikimedia.org/wiki/File:Arctotherium.jpg, https://en.wikipedia.org/wiki/Short-faced_bear#/media/File:ArctodusSimusReconstruct.jpg, https://commons.wikimedia.org/wiki/File:Ursus_spelaeus_Sergiodlarosa.jpg, https://en.wikipedia.org/wiki/Ursus_maritimus_tyrannus#/media/File:Ursus_maritimus_tyrannus.jpg, https://en.wikipedia.org/wiki/Agriotherium#/media/File:Agriotherium_insignis_plio_montpellier.JPG, Ending the Harmful Practice of Bear Dancing, A Romanian Bear And Her Cubs Cut off Dracula’s Castle, Romanian Bears And The Deadly Battle For Survival, Can Bears Climb Trees? Bear Phobia: Why Do Humans Fear Bears So Much? Well The bear that weighted 3500 lbs was Arctotherium Angustidens, not Arctodus Simus. staff. No doubt, a formidable predator to say the least. The polar bear, which always yields to the much smaller grizzly, would certainly let a giant short-faced bear take its kill, too. The species described are all thought to have been larger than any living species of bear. Its remains were found while excavations for a hospital construction in La Plata City, Argentina were going on. male Arctotherium angustidens maxed out around 3,500 pounds, and a skeletal reconstruction included in the paper is just shy of eleven feet tall. forum information. In that case, it likely just ran after prey for long periods of time until the prey was tired or it would steal carcass from other predators using its size to overwhelm them. This is quite simply, the largest bear ever discovered and by default, a contender for the largest carnivorous land mammal ever to live. Here’s some evidence, and a video, that shows just how puny the largest bears today look compared to the now extinct giant prehistoric bears. The short faced bear (Arctodus spp.) Yet, there were species that were likely prey choices of the Pleistocene grizzly. 585. the heavyweights: a. angustidens & a. simus. administration. Just like what we see in the T-Rex dinosaur, for example. A skeleton of Arctotherium angustidens from Buenos Aires indicates big males of this species would have weighed 1.6 tonnes, standing 3.4 meters tall, making it the largest bear known. Should be stronger also at same weight. geographical location. 1. http://news.nationalgeographic.com/news/2011/02/110203-biggest-bear-largest-giant-short-faced-animals-science/, 2. https://en.wikipedia.org/wiki/Arctotherium, 3. https://en.wikipedia.org/wiki/Cave_bear, 4. https://en.wikipedia.org/wiki/Ursus_maritimus_tyrannus, https://www.youtube.com/watch?v=4DNAUdLMBX0, 1. https://commons.wikimedia.org/wiki/File:Arctotherium.jpg, 2. https://en.wikipedia.org/wiki/Short-faced_bear#/media/File:ArctodusSimusReconstruct.jpg, 3. https://commons.wikimedia.org/wiki/File:Ursus_spelaeus_Sergiodlarosa.jpg, 4. https://en.wikipedia.org/wiki/Ursus_maritimus_tyrannus#/media/File:Ursus_maritimus_tyrannus.jpg, 5. https://en.wikipedia.org/wiki/Agriotherium#/media/File:Agriotherium_insignis_plio_montpellier.JPG. Cave bear bones were so abundant that the earth from the caves carrying these bones were used as a source of phosphate during World War 1. I know this is a dumb question to ask in the midst of a scientific discussion but I feel like I could get a more informed answer this way. The Tremarctinae are a subfamily of bears endemic to the New World, including two of the largest terrestrial mammalian carnivores that have ever lived: the giant, short-faced bears Arctodus simus from North America and Arctotherium angustidens from South America (greater than or equal to 1000 kg). In fact, a single bone from the forearm (ulnae) of a subadult bear found in the Thames, London, is all we have to go by. They were called “dragon caves.”. gigantic (e.g., Arctotherium angustidens and Arctodus simus, up to ~1,200 kg) to medium-sized (e.g., Arctotherium tarijense and Arctodus pristinus, up to —400 kg) and relatively small (e.g., Arctotherium wingei and Tremarctos ornatus, up to — 150 kg) (Soibelzon and Tartarini, 2009). Ulna comparison between A. angustidens vs. U.m.tyrannus Ursus maritimus tyrannus (B.M. 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