The creature called Snarly Yowl has been roaming the mountains near Harpers Ferry, West Virginia, possibly since the first Germans settled in the upper Potomac Valley in the early 1700s. Its evocative name is derived from germanic words that describe a wail that emanates from a toothy mouth.
Some who have encountered the dog-like beast claim to have shot it. A motorist near Boonsboro, Maryland, claimed to have run over the monster, only to see it standing and raging defiantly in his rearview mirror afterward. Others allege to have seen it standing on its hind legs. Similar to the tales of old German settlers, Snarly Yowl is said to appear out of thin air, to change its size, to disappear instantly. According to the legends, the beast lurks along old main roads into towns, challenging travelers along the way. It be encountered most often in the area of the Blue Ridge and South Mountain in Maryland, Virginia, and West Virginia.