Tuesday 18 June 2019

How dogs quickly evolved a unique facial muscle to better manipulate humans

The raised inner eyebrow movement in dogs is driven by a muscle which doesn't consistently exist ...

An extraordinary new study, examining the anatomical differences between dogs and wolves, has revealed our canine companions recently evolved a very small facial muscle allowing them to raise their inner eyebrow. This tiny muscle was not found in wolves, suggesting dogs rapidly evolved this extra tissue to better communicate with humans.

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Category: Biology

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from New Atlas (Gizmag) http://bit.ly/2IoChXC

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