Giant short-faced bears went extinct approximately 12,500 years ago. During this time the last ice age ended and many large herbivores (like mammoths and mastodons) began to go extinct due to the change in climate and increased hunting pressure by humans. Arctodus simus ate many large herbivores, and the disappearance of these herbivores could have played a large role in its extinction. There is some evidence that competition from brown bears for food also played a role in the extinction of Arctodus simus but scientists are still researching and debating this theory.
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