John Craven and the Countryfile Diaries team - Keeley Donovan, Jules Hudson Paul Martin and Margherita Taylor - report on the most interesting stories of the season. Jules discovers how the latest tech could help get dogs in shape this spring. Meanwhile, Keeley reveals the surprises inside a favourite health food, and meets a farmer bringing an Icelandic superfood yoghurt to Yorkshire. And on Exmoor, Margherita learns the role of keen-eyed volunteers in preventing butterfly crime.