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February 11, 2013 07:20 pm PST

Why do dogs bark? (And what are they saying when they do?)

Barking might just be a reflex for agitated dogs. It might be a side-effect of domestication — i.e., when you select for less-aggressive animals you get ones that tend to bark. Or, it really might have meaning, both for other dogs and for humans. At Scientific American, Brian Hare and Vanessa Woods describe some of [...]


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