Scientists from Germany and the Czech Republic have shown that domestic cattle and roe deer across the globe tend to graze aligned to North-South magnetic field lines. Using satellite data from Google Earth, they state that

“Because climatic factors like wind, sun, or temperature were apparently not common directional key factors explaining ubiquitous alignment, we conclude that the magnetic field is the only common and most likely factor responsible for the observed alignment.”

Gives a new meaning to “animal magnetism”.