Can Horses 'Watch and Learn'?

Can Horses 'Watch and Learn'?: Watch and learn. It sure seems that horses can do it. One of them figures out how to open the gate to get to your not-so-well-hidden stock of carrots, and then before you know it, they're all getting orange in the muzzle. So can they really learn from each other? Maybe, according to a group of Danish equestrian scientists, but there's nothing cert...