A curious and interesting case of the unexplained mysteries of our world is that of the Overtoun Bridge.
Overtoun Bridge is located in West Dunbartonshire, Scotland. It has caught the attention of media due to the fact that between the 1950's and 1960's, a numerous amount of dogs have committed suicide by jumping off of the bridge, at a rate of about once a month.
Apparently that not only would all the dogs who died jump from the exact same side each time, but those who survived the fall would return later to jump again, from the same spot.
This mystery became known internationally through the media, and was a common topic of discussion and interest for many a while.
Below is a Documentary about this case, with leading animal behaviourist, Dr David Sands.