The Skilful Mind of the Guide Dog - Towards a Cognitive and Holistic Model of Training by Bruce Johnston. This book will be of value to dog owners and professional trainers, education and training staff of guide dog schools, students of animal and human cognition, veterinary staff, and anyone who has a curiosity about how the guide dog does its job. Shelley L. Rhodes, M.A. CVRT and Ludden black Labrador Guide Dog. The cure for anything is salt water -- sweat, tears, or the sea. -Isak Dinesen (pen name of Karen Blixen), author (1885-1962)