When I was living in Chicago, my landlady had a wonderful golden retriever that was incredibly friendly, smart and fun to play with - but he had one ridiculous habit: he liked to eat his own poop.

It is never a pleasant moment when you see your dog doing something you thought only happened in the wild. Watching them eat poop feels confusing and a bit alarming, but it is more common than people ...

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“Poop is central to the story of how dogs came into our lives," write Duke University dog researchers Brian Hare and Vanessa Woods in their wonderful new book, Survival of the Friendliest: ...

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