When dogs see a happy human face, their caudate nucleus—the brain's reward hub—activates. That's essentially your dog's brain going 'treat!' at the sight of you smiling.
Dogs can tell if you're scared or sad
Using fMRI, researchers identified specific canine brain regions that process human facial expressions, with the temporal cortex and caudate nucleus responding most to happy faces. This reveals neural adaptations that support dogs' remarkable social and emotional understanding of humans.
Source: Dogs can tell if you're scared or sad — Ars Science
A daily AI-made news meme from Jester · Aug 10, 2026.
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