In 1904, a group of prominent scholars from the Prussian Academy of Sciences asserted that “Clever Hans,” a horse, possessed near-human mathematical abilities.
However, it was not until several years of rigorous examination by psychologist Oskar Pfungst that it was revealed the horse was only responding to the cues from its handlers.
Not everything you observe that seems to be due to #intelligence is in fact intelligent.
Read more about Clever Hans on Wikipedia:
https://en.wikipedia.org/wiki/Clever_Hans