The science of fluid dynamics posits that solids are defined as objects with consistent volume and fixed shape. And liquids are substances whose volume remains the same, though their shape can change. The latter seems to apply to cats: Despite a constant volume, they can bend as they please to fill a container such as a cardboard box or a sink. Other properties apply too: like ketchup, which must be squeezed of its container, a cat must apply a minimum amount of force to shimmy its body through a small opening. This means that cats should be classified as liquids, right? Thanks to this newly re-circulating meme, French Physicist Marc-Antoine Fardin recently discussed his Nobel-Prize-winning research on the fluid behavior of cats.
