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This is Scientific American 60-Second Science. I'm Sophie Bushwick.Got a minute?

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Wolves and bears sound like unlikely allies.

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But the resurgence of Yellowstone Park's canine population has helped the bears.

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In a berry interesting way.

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In the 1990s, people reintroduced wolves to Yellowstone Park, where they had been absent for most of the century.

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As their population grew, they began hunting elk, reducing their number.

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And with fewer elk snacking on berries, more fruit remained available for bears.

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Comparisons of grizzly scat collected in the years before and after the wolves' return showed an increase in the bears' berry consumption,

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particularly during the months of July and August.

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The study is in the Journal of Animal Ecology.

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Fruit can make up fully half of a grizzly's diet as it prepares for hibernation.

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But bears and berries aren't the only ones to benefit from wolves.

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The canine comeback also boosted the growth of popular elk foods such as aspen and willow trees.

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Which proves even a single species can have a beary strong ecosystem effect.

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Thanks for the minute, for Scientific American 60-Second Science.I'm Sophie Bushwic.

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