Dogs Are Sloppier Drinkers Than Cats

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In a quest to discover why canines are such doggone sloppy drinkers, a team led by researchers at MIT (yes, I'm referring to the esteemed Massachusetts Institute of Technology) has described in some detail why dogs are such a hot mess when imbibing from their water bowls. The team was also able to shed some light on why large dogs create more mopping opportunities than their tinier counterparts.

Get Your Drink On: Cats vs. Dogs vs. Humans

The researchers presented their findings at an American Physical Society's Division of Fluid Dynamics Meeting, following up on a study published in 2010 on how cats drink. The prior study found that:

"Felines drink via a two-part process consisting of an elegant plunge and pull, in which a cat gently places its tongue on the water's surface and then rapidly withdraws it, creating a column of water underneath the cat's retracting tongue."

Since both cats and dogs walk on all fours and their bodies are adapted to a predatory lifestyle, their cheeks are designed for more serious business than sucking in fluids like ours are.

Punching vs. Plunging

Unlike the elegant feline plunge-and-pull, dogs punch the water's surface with their tongues, which creates a lot of splashing. Then they pull their tongues back in a greatly accelerated motion - about five times that of gravity - which creates columns of water that travel upwards into their mouths.

Big Dogs Make a Big Splash

Since bigger dogs drink with a larger moist area of the tongue, the researchers told DNews "...a proportional relationship exists between water contact area of the dog's tongue and body weight, thus the volume of water a dog's tongue can move increases exponentially relative to the dog's body size."

Translation: the bigger the dog, the bigger the mess. (I think we already knew this!)

And one last tidbit you may want to contemplate as you wipe down the floor around your dog's water bowl for the umpteenth time... Since the tip of your dog's tongue functions like a gravy ladle or serving spoon, when it's full to the brim, he has to open his mouth wider to pull in all the water. This also contributes to the splishy-splashy-sloppy factor.

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