Cats And Dogs Drink Very Differently
The most popular pets in the world might both drink from water bowls, but the ways in which they drink are quite different. In a general sense, dogs tend to be messier: they plunge their tongues past the surface of the water and curve them backwards into a scoop-shape, creating five times the acceleration of gravity as they pull them back into their mouths. This process creates a column of water that the dog catches and swallows. Cats, on the other hand, are a bit daintier. They don't go past the surface of the water with their tongues, preferring to lap without causing a splash. They pull up a smaller column of water, then close their mouths over it.
from Earth Unplugged
Key Facts In This Video
Cats have spikes of keratin on their tongues called filiform papillae. (0:16)
Watch a cat drink in slow motion: (0:46)
Watch a dog drink in slow motion: (2:17)