HAPPINESS HAPPENS DAY. Three dogs—a grey pit bull mix, a beagle, and a light brown poodle mix—are shown against a solid blue background. All three dogs have their tongues out and appear happy. Below is 'Center for Human-Animal Interaction ®' and 'chai.vcu.edu'.

Happy Happiness Happens Day! A major new study led by the University of Oxford traced the incredible journey of dogs across the Americas using ancient DNA.

For more, click here: doi.org/10.1098/rspb...

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