In Pennsylvania Dutch Country Ghosts, Legends, and Lore, Charles A. Adams III, author of several books on the paranormal lore of various regions of Pennsylvania, recounts an account of a creature seen in Lancaster County in 1973.
A man-sized gray creature with a white mane, fangs and claws and a wolflike appearance grabbed a chicken in view of two farmers. The farmers also reported that the beast was possessed of two sharp horns.
Chad Arment notes that the original report in Pursuit (the journal of Ivan T. Sanderson's Society for the Investigation of the Unexplained, or SITU) placed the creature in the Big Valley in Lancaster County, but as no such feature exists in the county, he speculates that the incident actually occurred in the Big Valley in Mifflin County. He also notes that the Big Valley was settled by many Amish from Lancaster County and that this may account for confusion.