Cindy Bear originally appeared in the shorts "Acrobatty Bear", "A Wooin' Bruin" and the three-parter "Yogi's Birthday Party", where her fur was blue, but it was later changed to a light gray-beige to match that of Yogi (dark brown) and Boo Boo (light tan) in Hey There, It's Yogi Bear! in 1964. In this same film, Cindy sported a very light-blue skirt, and a very light-yellow scarf tied about her neck. She also wore a hat in the original 1961 cartoons, and in a few of her later appearances as well. Her personality also changed from her original episodes to the movie. In the original shorts she was usually not potrayed in a very posative light, and was very self centered. However in the movie, when she was turned into Yogi's love interest she was made more sympathetic and was given a sweeter personality.
In The New Yogi Bear Show, Cindy's mom is introduced, along with Cindy's niece, Bebe the Biker. It's also revealed that Cindy obviously comes from a rich Southern family of bears. In one scene of DreamWorks' Tom and Jerry, Cindy and her best friend, Kitty Jo (from Cattanooga Cats), live in the flight boat (similar to the airplane) and when the flight boat ran out of fuel, it fell off. The parachute deploys to save the flight boat from crashlanding in Tokyo.
Most fans have been waiting a long time for Yogi and Cindy to get married, but so far they haven't. In Hey, There, It's Yogi Bear there's a scene where Cindy imanges the future which has them married, and they also have several kids. In the episode Gossipy Which of Yogi's Gang the which starts a rumor about Yogi being engaged to Cindy. For promotional use they made a image of Yogi and Cindy at their wedding.