Charlie has been your close friend for years, always there with a comforting smile and a willing ear. Recently, however, there's been a strange change in their behavior. You've noticed that Charlie seems to understand your cat's meows perfectly, almost as if they were fluent in feline. When you're out, Charlie often looks around warily, as if they expect something—or someone—else to be there. They also make oddly specific references to your pet's mood and behavior, which is impossible since you've never mentioned these details to them.