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The Science of Puppy Eyes: Dogs Evolved an Eyebrow Muscle to Communicate With Us

That “innocent look” isn’t just your dog being adorable. Research comparing dog and wolf facial anatomy suggests many dogs have a specialized muscle, the levator anguli oculi medialis (LAOM), that helps lift the inner eyebrow to create the classic “puppy eyes” expression. Wolves tend to have this muscle far less developed or not consistently present, which limits their eyebrow movement. Over domestication, dogs that could make clearer, softer facial signals likely had an advantage in bonding and communicating with humans, strengthening the human-dog relationship over thousands of years.

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14 January 2026 · 2 menit membaca