There's a reason we call them puppy dog eyes—those soulful, innocent expressions can sway even the most hardened human.
Puppy Eyes Face Human
Background. Puppy eyes are so sweet and persuasive due to adorable evolution, new research suggests. Good vision can be important especially for service animals that need to pay very close attention to human partners or run interference as protection dogs.
The Happy Broadcast Human Selection Has Resulted In Dogs Evolving More from 64.media.tumblr.com
Dogs have evolved to manipulate humans with their eyes, scientists claim. Search, discover and share your favorite puppy eyes gifs. When meeting a person's gaze, dogs often raise their inner eyebrow muscle to make their eyes look larger and more appealing.
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Dogs have been perfecting their puppy eyes for thousands of years. Good vision can be important especially for service animals that need to pay very close attention to human partners or run interference as protection dogs. Dogs have solid muscle structure around their eyes. This tiny creature may only be a few millimetres long, but he has a smile as big as his abdomen.
