dog to human telepathy (circa 1920) 
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.
(*note: amended contextual reference. Text source from website: http://www.weirdexperiments.com/apps/blog/show/5242021)
Thanks formicarius

dog to human telepathy (circa 1920)

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.

(*note: amended contextual reference. Text source from website: http://www.weirdexperiments.com/apps/blog/show/5242021)

Thanks formicarius