How to Greet a Dog and What to Avoid.
This is a great resource with clear and engaging images that depict a variety of scenarios. It clearly states all the do's and don't's with approaching a dog and explains the why in a way that children can comprehend.
I initially got this book as a crash course for my nephew and admit without shame that I learned a few things myself. It is just eight simple lessons, so the book is short enough to keep a young child's attention; however, the book uses a few more complex words that maybe a little tough for a child to read on their own if they are just starting out.
Currently the ebook is free on Amazon, with a retail of $.99 (check price before checkout). I will be adding more of Dr Yin's books to my reading list.