The Daily Mail's Foreign Service informs us that cows in one area of Switzerland have been throwing themselves off cliffs and plunging hundreds of feet to their deaths (link). They refer to the cows "committing suicide", but then they later say "Most scientists generally believe that animals are incapable of committing suicide."
Could they just be confused? Could it have something to do with recent thunderstorms in that area?
Or, is it something else? How could anyone explain no less than 28 cows and bulls plunging off a cliff in the space of just three days? While some might come up with "outlandish" ideas - such as UFOs or them realizing that the 2012 Singularity is nigh - at times like these it's best to do what Sherlock Holmes would do if he were still around. He would consider the most likely possibility: one of the cows is a serial killer.