Cats are mysterious, adorable, and sometimes downright confusing. One moment they are purring on your lap, the next they are hiding under the bed. If you have ever brought home a new feline friend, you know patience is the golden rule. That is where the 3-3-3 rule comes in. It is a simple yet powerful way to understand what your cat is going through as they settle into their new home. The rule breaks down your cat’s adjustment into three stages: 3 days, 3 weeks, and 3 months. Think of it as your cat’s personal roadmap to comfort, trust, and love.