Another equine-themed illusion, this one has been confusing viewers since the 1970s. The design begs the question, how many horses are in the painting? And despite how many times we counted the horses, we never got the answer that the artist, Bev Doolittle, revealed as correct. This is an optical illusion of a different kind. It’s what’s known as a literal optical illusion since it was created intentionally by the artist to hide or disguise things in plain view, without relying on our minds to trick us. We love them all the same.