Imagine the loneliness of speaking a language that only you can understand. Researchers have been studying a whale, who communicates in a language not recognizable by other whales. This whale has spent over two decades looking for a friend who will understand him.
Throughout history, there have been stories of animals committing suicide. Two thousand years ago, Aristotle wrote about a horse that was so ashamed after unknowingly mating with his own mother, that he killed himself. While these types of stories sound improbable, there are cases where animals kill themselves, and no one knows why.