Dogs' eyes well up with tears of joy when reunited with their owners - CNN

New research has suggested a dog's eyes well up with tears of happiness when reunited with their owner after a period of absence. The tears may help cement the bond between human and dog -- a relationship that goes back tens of thousands of years.

(CNN)A wagging tail, a loving lick, a playful jump, a heart-melting gaze. You know when your dog is happy to see you. Now, new research from Japanese scientists suggests that a dog's eyes may well … [+2717 chars]

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