Is there anything cuter than a puppy? They're little and fluffy and they have those adorable puppy dog eyes that melt your heart. Well it turns out that those puppy dog eyes are part of the evolution of wolves to dogs and dogs developed those sweet, sweet eyes in order to manipulate hoomans.

A new study from the National Academy of Sciences says that when dogs split from wolves 33,000 years ago, they developed an inner eyebrow lift that "resembles an expression humans produce when sad, so its production in dogs may trigger a nurturing response." In other words, they figured out that if they give you those eyes you'll take care of them. And of course, we do take care of them. We feed them hooman food, make sure they have comfy places on our beds to sleep, and buy them ridiculously overpriced dog toys.

There is also a thing called 'mutual gaze' that happens between mothers and infants, and dogs and humans. It's another way that the bond between humans and their pets are formed and solidified. Seems these dog creatures are pretty smart. They look deeply into our eyes and then give us the raised inner eyebrow puppy dog eyes and we are hooked.

So the next time you are looking for a doggo or just wondering why your pup seems to be so tuned into what you are thinking, it's them building a relationship with you so you'll take care of them. In turn, they give you their lifetime of love and companionship, insane tail wagging, and the best welcome home every time you walk through the front door, ever. Sounds like a great trade off.

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