Dogs can learn to recognize smiles

Dogs can learn to tell apart smiles from blank ex­pres­sions in pho­tographs of peo­ple, a study has found. But wheth­er they rec­og­nize and re­spond to smiles in real life is open to ques­tion, ac­cord­ing to the re­search­ers.
“Although it re­mains un­clear wheth­er dogs have hu­man-like sys­tems for vis­u­al pro­cess­ing of hu­man fa­cial ex­pres­sions, the abil­ity to learn to dis­crim­i­nate hu­man fa­cial ex­pres­sions may have helped dogs adapt to hu­man so­ci­ety,” the sci­en­tists, with Az­abu Uni­vers­ity in Ja­pan, wrote in a re­port on the find­ings.

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