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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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When you think about dog food, you probably picture more meat than potato.

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But a new study finds that, unlike wolves, dogs have genes that allow them to digest starch.

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That evolutionary adaptation may have helped fuel their domestication.

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The report is in the journal Nature.

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Dogs and wolves hail from a common canine ancestor.

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And though you can still see a strong resemblance, many traits distinguish the two today.

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Wolves have larger teeth and skulls than dogs do.

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And they're far less likely to bring you your newspaper and slippers.

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To figure out how such differences might have evolved, researchers compared the DNA of a dozen wolves and 14 different dog breeds, from cocker spaniels to German Shepherds.

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And they found 36 places where the dogs' genes stray from those of the wolf.

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Some of these genes have to do with the brain, but a surprising number help pooches process carbs.

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That metabolic trick may have made it easier for dogs to stomach hanging around with humans, particularly once people started farming.

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The leftover grains in the scrap heap may have attracted animals that, over time, evolved an ability to carbo-load.

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And ultimately convinced them to stay.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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When you think about dog food, you probably picture more meat than potato.

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But a new study finds that, unlike wolves, dogs have genes that allow them to digest starch.

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That evolutionary adaptation may have helped fuel their domestication.

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The report is in the journal Nature.

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Dogs and wolves hail from a common canine ancestor.

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And though you can still see a strong resemblance, many traits distinguish the two today.

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Wolves have larger teeth and skulls than dogs do.

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And they're far less likely to bring you your newspaper and slippers.

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To figure out how such differences might have evolved, researchers compared the DNA of a dozen wolves and 14 different dog breeds, from cocker spaniels to German Shepherds.

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And they found 36 places where the dogs' genes stray from those of the wolf.

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Some of these genes have to do with the brain, but a surprising number help pooches process carbs.

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That metabolic trick may have made it easier for dogs to stomach hanging around with humans, particularly once people started farming.

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The leftover grains in the scrap heap may have attracted animals that, over time, evolved an ability to carbo-load.

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And ultimately convinced them to stay.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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