Water voles are returning to a stretch of river after a 30year absence. Some 150 are being released on the River Aller, which is part of the National Trust’s Holnicote Estate in Somerset. A snorting horse is a happy horse! Scientists have discovered that rather than showing they are irritated, a snort is a reliable indicator of positive emotion. Horses snorted twice as much when they were free to roam compared to when they were confined to stalls.