Who is behind a string of grisly cow deaths in Texas?

Authorities are stumped after seven cows are mutilated in three counties within weeks

Their tongues were cut off, but there was no spilled blood. No signs of struggle. No footprints or tire tracks were found. Investigators were stumped: who is going on a murderous rampage of cows in Texas, and how are there no clues surrounding their deaths?

It seemed a scene straight out of The Secrets of Skinwalker Ranch, the reality TV show on the History Channel about the Utah ranch that is supposedly the site of unexplained supernatural phenomena.