In this episode, Arlene visits Threave Estate, near Dumfries, to find out how hi-tech cattle are being used to restore a lost landscape. As the price of fertiliser skyrockets, Dougie finds out how it's affecting Scottish farmers and what alternatives there are available.Meanwhile, Cammy is letting his puppies loose for the first time to see if there is a top sheepdog amongst them. And Dougie is taking a walk around the heritage trail at the Loch Leven National Nature Reserve, where he learns how the improvements to visitor facilities will allow greater accessibility to those with disabilities, giving them a place to connect with nature and encounter wildlife.