Cats: Ignoring you most of the the time, yet desperately requiring your attention the second a book is opened.
Science recently discovered that when cats drink, they pretty much defy gravity. The tongue barely brushes the surface of a liquid before darting quickly back up, forming a column of water between the moving tongue and the surface of the liquid. Then the cat's jaws snap closed around this column of water, and the cat swallows it. Boom -- a refreshing drink, feline-style.