The first thing you might notice from this story is that multiple scientists at multiple universities study how domestic pets consume liquids. "Three years ago, we studied how cats drink," biomechanics engineer Sunny Jung explains with refreshing candor. "I was curious about how dogs drink, because cats and dogs are everywhere."
Jung, an associate professor at Virginia Tech, and his fellow researchers are presenting their findings on "How Dogs Drink Water" at the American Physical Society's fluid dynamics division meeting in San Francisco. Neither cats nor dogs can suck in liquids, since they have "incomplete cheeks" — the better to catch prey with their jaws — so they rely on gravity-defying tongue action to move liquid into their mouths.
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