PLAYING WITH LUKAS: How A Woman and A Horse Found A Private World of Animal Intelligence and ThemselvesFind your four, now look for the two, Karen Murdock tells Lukas. For the Worlds Smartest horse it's a simple task to identify the numbered plaques before him. In fact, it's that trick that earned Lukas his recent Guinness World Record. It's hard to believe that just a few years ago this Thoroughbred ex racer stood starving and neglected in a yard. It was only after purchasing this "project horse" that Murdock discovered Lukas' extraordinary capacity