Your puppy isn't looking at you lovingly just because he wants a treat. Scientists in Britain found that dogs alter their facial expressions simply when their owners look at them — regardless of whether food is available, per a study published Oct. 19 in the journal Scientific Reports.
Researchers monitored the facial expressions of dogs as their owners paid attention to them and then when the owners looked away, specifically examining the muscle that dogs use to raise their eyebrows and widen their eyes. This adorable mug is what people refer to as the "puppy dog" look.
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