Drinking is the act of ingesting water or other liquids into the body through the mouth, proboscis, or elsewhere. Humans drink by swallowing, completed by peristalsis in the esophagus. The physiological processes of drinking vary widely among other animals.
Most animals drink water to maintain bodily hydration, although many can survive on the water gained from their food. Water is required for many physiological processes. Both inadequate and (less commonly) excessive water intake are associated with health problems.
In this BBC video about the Azores Dr. Felix Rodrigues tells us four legged animals can't drink from beneath their feet. I've never heard of this before and couldn't find anything about it. Does anyone know about this and/or where I can find out more about it? Google didn't help.