How dogs lap: ingestion and intraoral transport in Canis familiaris.

Citation:

A. W. Crompton and Catherine Musinsky. 2011. “How dogs lap: ingestion and intraoral transport in Canis familiaris.” Biological Letters, 7, Pp. 882-884. Copy at http://www.tinyurl.com/y4te3rxs

Abstract:

 

It has recently been suggested that the mechan- ism for lifting liquid from a bowl into the oral cavity during lapping is fundamentally different in cats and dogs: cats use adhesion of liquid to the tongue tip while dogs ‘scoop’ with their backwardly curled tongue. High-speed light videos and X-ray videos show that on the con- trary, both cats and dogs use the mechanism of adhesion. Liquid is transported through the oral cavity to the oesophagus, against gravity, on the surface of the tongue as it is drawn upwards, then a tight contact between the tongue surface and palatal rugae traps liquid and prevents its falling out as the tongue is protruded. At least three cycles are needed for intraoral transport of liquid in the dog.

Last updated on 12/07/2016