Most dog owners think that their dogs can tell what they're thinking. Or at least, in some sense, they will insist that their pet pooches can sense their emotions, and respond accordingly.
Indeed, a man by the name of Karl Krall (say that three times fast) thought that there exist some sort of psychic connections between man and animal. And he thought he could prove it.
In this telepathy experiment between human and dog Karl Krall (on the right) tried to detect the thinking radiation he assumed to flow between the two. Krall was a rich dealer in diamonds who had founded his very own institute for paraphysical research in Munich. He had also taken care of the famous horse Clever Hans (who performed arithmetic in Berlin in 1904) after his owner Wilhelm van Osten had died. He thought Hans used telepathy and started an elaborate research program but he was wrong: the horse could read the right answers in small unintentional signals given by humans.
Of course, several questions emerge from this: what are those scientists (Krall on the far right) looking through? Do they think they can see through those upside-down soup pots? How did they convince the dog to just chill there with the giant overturned soup pot overhead? And why does the gentleman beneath the giant inverted soup pot appear to be wearing a kittel?