Of the world's dogs, less than two hundred million are pets, living with humans who provide food, shelter, squeaky toys, and fashionable sweaters. But roaming the planet are four times as many dogs who are their own masters--neighborhood dogs, dump dogs, mountain dogs. They are dogs, not companions, and these dogs, like pigeons or squirrels, are highly adapted scavengers who have evolved to fit particular niches in the vicinity of humans. In What...
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Animals Nature Pets Pets & Animal Care Science Science & Math Science & Scientists Science & Technology