Roger, the invisible dog, is an imaginary friend created by the author for his grandchildren and great-grandchildren. In reality, Roger is the child's conscience. Roger teaches them many things they will need to know growing up. He talks to them, giving them advice about what to do and how to behave as they transition from childhood to adolescence.The book contains 40 short stories intended for children in pre-school, Kindergarten, and 1st through...