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.
www.newscientist.com

Dogs evolved a special muscle that lets them make puppy dog eyes
An explanation for those puppy dog eyes Human selection has resulted in dogs evolving more expressive faces. They have a facial muscle for making the “puppy dog eyes” that melt many peoples’ hearts that does not exist in wolves – the ancestors of dogs . This muscle allows dogs to lift up their...