The six-lined racerunner is a type of lizard that is commonly found in North America. It is also known as the blue-tailed skink, swift, or ground dragon. The name "six-lined" comes from the six distinct stripes that run along the length of its body. Depending on the region, it may also be referred to as a runner, racer, or swift lizard. In some cases, it may also be called a whiptail due to its long, slender tail. No matter what you call it, this lizard is known for its incredible agility and speed, making it a fascinating creature to observe in the wild.