The TY Teenie Beanie Babies 'Rex' the Tyrannosaurus is a McDonald's Happy Meal toy released in 1999. This collectible toy features the iconic T-Rex design with its original tag still attached, making it a sought-after item for fans of both McDonald's promotions and Beanie Babies. This limited edition toy is a nostalgic piece from the late 90s that would be a great addition to any collection or a fun surprise for fans of these classic toys.