Yogi Bear, the ursine protagonist of a classic American cartoon, was doggedly persistent in his quest to pilfer picnic baskets from unsuspecting human visitors to the fictitious Jellystone Park. Because bears and humans are among the most omnivorous in the animal kingdom, it's not surprising that we often find ourselves competing for the same food. While we often think of this interaction as one-sided, with bears like the fictional Yogi taking food from people, in the global picture, humans have in fact taken much more food out of the mouths of bears than the other way around.
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