In the 1942 original movie, Bambi's mom said, no deer lived half as long as The Great Prince of the Forest. In other words he was more than twice as old as any deer she knew lived long enough to be. That would make The Great Prince much older than she was. In Bambi II, however, The Great Prince told Bambi (still a young fawn) that he was Bambi's age when he met Bambi's mom for the first time. Although, she may have been exaggerating.