Bulletin of the American Physical Society
67th Annual Meeting of the APS Division of Fluid Dynamics
Volume 59, Number 20
Sunday–Tuesday, November 23–25, 2014; San Francisco, California
Session R7: Biofluids: Mechanics of Swallowing and Speech
1:05 PM–3:28 PM, Tuesday, November 25, 2014
Chair: Kartik Bulusu, The George Washington University
Abstract ID: BAPS.2014.DFD.R7.2
Abstract: R7.00002 : How dogs drink water
1:18 PM–1:31 PM
Animals with incomplete cheeks (i.e. dogs and cats) need to move fluid against gravity into the body by means other than suction. They do this by lapping fluid with their tongue. When a dog drinks, it curls its tongue posteriorly while plunging it into the fluid and then quickly withdraws its tongue back into the mouth. During this fast retraction fluid sticks to the ventral part of the curled tongue and is drawn into the mouth due to inertia. We show several variations of this drinking behavior among many dog breeds, specifically, the relationship between tongue dynamics and geometry, lapping frequency, and dog weight. We also compare the results with the physical experiment of a rounded rod impact onto a fluid surface.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.DFD.R7.2
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