Purchased this book as birthday present for 8 yr old grandson. He was exited when he opened the book and a week later we received a handmade written thank you note after he finished reading the book. I takes quite a bit to get him excited about a book so from that response I would interpret that the book is great for 8-year-olds. However, I did not actually read the book.
I would read everything from this author. Philip Keller presents spiritual truths with charm, humor and insight into us as the Lord's sheep. Excellent! Also highly recommend A Shepherd Looks at Psalm 23 which we used in a fellowship group. I plan to share Sheep Dog with family.
Please continue to publish Lessons from a Sheep Dog and A Shepherd Looks at Psalm 23 by Phillip Keller. In my judgment they are a must read, not only for Christians, but also as an evangelistic outreach.