Scientists aren’t entirely sure how wolves evolved into dogs, but new research into the genetic and social behavior of wolf pups may offer some clues. | ScienceTake

When dogs split from wolves either due to some natural selection or very early domestication, they developed a special eyebrow muscle. These are the levator anguli oculi medialis - muscles that wolves don’t have. This tiny change lets them raise their inner brows, making their eyes look bigger, sadder, and more human-like. Humans are hard wired to respond to baby-like features so our ancient ancestors likely picked the dogs to breed which had the most expressive eyes! It’s been getting them out