It seems The Boy and the Dog by Seishu Hase is being bought by some older family members for children in the belief it's a lovely story like The Incredible Journey. It is not a children's book - a fifth of it is about a prostitute who gives blow jobs and hand jobs and there is a LOT of other detail. None of this comes up in the blurb, which of course is fine if you know it's an adults book, but it is getting some very shocked young readers I understand.