Theriodictis was one of these dogs. It was prevalent in the Pampean region of what is today Argentina. It appeared during the early Pleistocene and coexisted with the huge bear Arctotherium angustidens and with Smilodon, both of which may have occassionally stolen its kills.

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Nothrotherium torresi in sediments related to humid conditions, supporting the idea that members of the Nothrotheriinae had great ecological tolerance and was capable of inhabiting climates ranging from cold and arid to warm and humid. Second image shows a skull of Arctotherium

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Old Arctotherium angustidens sketches. The biggest bear in the world.

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I am Venezuelan Vertebrate Paleontologist and discovered for the first time the Tremarctinae bear Arctotherium wingei from Guacharo Cave and Muaco, Venezuela, and my month salary is less than 180$

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- Personajes de la Megafauna extinta de Sudamérica / Characters of the extinct South American megafauna

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