Legends of black dogs and phantom hounds are widespread throughout the Chesapeake Bay region, which was one of the earliest areas settled by the English.
Specific Location: Frederick County
"Snarly Yow" is the name given to a phantom hound which haunted a section of the National Pike near Turner’s Gap (Frederick County). The hound was first mentioned by Madeleine V. Dahlgren in 1882. Her book South Mountain Magic details no less than a dozen sightings of the beast. One account is from a Daniel Mesick, whose father kicked at a huge dog near Dame’s Quarter.
It could be just another variant of an urban legend or a wholly separate story, but the city Frederick (Frederick County) has its own Blue Dog of Rose Hill. The grounds of Rose Hill Manor off Route 355 in the northern part of the city are also haunted by a phantom blue dog. This blue dog was the pet of a previous owner of the manor.