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Food vs Praise
Gregory Berns from Emory University demonstrates through an MRI scan, that when a dog is expecting praise their dopamine levels go higher than when expecting food.
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More clips from Dog Tales: The Making of Man's Best Friend
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Can dogs drive robots?
Duration: 00:54
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The evolution of 'puppy dog eyes'
Duration: 01:34
More clips from Dog Tales and Cat Tales
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Manipulative meowing—Series 1, Cat Tales: In from the Wild
Duration: 01:06
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Trailer: How We Tamed the Cat and Dog
Duration: 00:30
