Bigboote
That's big-boo-TAY
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It's official: puppy-dog eyes evolved for people. Domesticated dogs have muscles in their faces specifically so that they can pull their eyelids further open and make their eyes look bigger. Wolves don't have these, so dogs acquired it since they were domesticated.
Dogs evolved a special muscle that lets them make puppy dog eyes
It’s their “puppy dog eyes” that really help dogs melt our hearts – now we know they are created by a facial muscle that is lacking in the closely related wolf
www.newscientist.com