In some European cultures it was customary to place the dried or desiccated body of a cat inside the walls of a newly built home to ward off evil spirits or as a good luck charm. It was believed that the cats had a sixth sense and that putting a cat in the wall was a blood sacrifice so the animal could use psychic abilities to find and ward off unwanted spirits. Although some accounts claim the cats were walled in alive, examination of recovered specimens indicates post-mortem concealment in most cases.