After dogs, horses may be man's best friend, new research suggests. Based on their ability to understand subtle eye and body movements, horses can grasp human dispositions relatively well. "Depending on how horses are domesticated and trained in future, they may have the potential to catch up with dogs as being man's best understanding friend," says Discover Magazine. "A recent study conducted by Carol Sankey of the University of Rennes, for example, determined that horses recall positive interactions with individuals, even when the horse and human are separated for months at a time."