Coyotes turn out to have face muscles that look capable of making that big-eyed, sad-puppy face that dogs have used to melt human hearts for eons.
That discovery supports a rethink of humans’ history with dogs, say biologist Patrick Cunningham of Baylor University in Waco, Texas, and colleagues. Maybe it’s not all about us.
He examined a little facial muscle called the LAOM at the upper, outer side of each eye in 10 coyote cadavers from Texas. The LAOM of the coyotes looks substantial enough to pull the top eyelids upward, Cunningham and colleagues report October 2 in Royal Society Open Science. That’s the move that creates the visceral
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