Just the title of this book makes us laugh—anyone who's ever loved a cat knows how oozy they can be. Inspired by a satirical scientific investigation of how cats behave like a liquid (which won an Ig Nobel Prize, by the way), this book for readers up to 7 considers the physical properties of liquids and also celebrates cats in all their flowing, furry glory. "Cats fill. Cats spill. Cats flow downhill. Cats tip. Cats drip. Cats grip, snip, rip. Cats are a liquid, except when they're not." Misa Saburi's cartoon felines are irresistible, whether filling up bowls or wrapped around their owners, and you might learn a thing or two about physics here, too.