Someone told me once that dogs are happier if they have a job, if they have work to do. When I heard this I recalled the sheepdog trials that took place in the fields of Crossburn Farm in Troon, fields that were separated from our back garden in Hunter Crescent by the waters of the Pow Burn. Watching a Border collie herd sheep into a pen is observing the well-synchronized partnership between shepherd and dog. Sue and Droopy…