Are you a cat person, or would you like to be one? Welcome to the club. Thirty-four percent of American households include at least one cat, which adds up to 90 million pet kitties owned in the U.S. If you're thinking about getting a cat — or want to know more about the one you've got — the new book The Cat Bible: Everything Your Cat Expects You to Know is an excellent place to start. Author Tracie Hotchner is one of the leading experts of the feline world. TIME's Andrea Sachs (who has two cats herself) interviews Hotchner.