Cindy Lou is a beige-brownish cat around Tom's age and appears exclusively in Birthday Surprise, celebrating her birthday. Hoping to have a mouse of her own as she conversates with a friend through the phone, with Tom overhearing it. so, he tries time and time again to give Jerry to her. Soon, after Tom finally got to give her Jerry in a music box, but she exits the house as She goes with another cat named Gaylord, who is wearing a diamond-studded vest, and inadvertently leaves a heartbroken Tom as she goes in a sports car into the horizon.