One of my recent best buys has been this children's book: T-Veg The story of a carrot-crunching dinosaur by Smriti Prasadam-Halls, Illustrated by Katherina Manolessou. What a nice book with beautiful colourful illustrations, an adventure and a strong vegetarian and anti-bullying messages. Find more info about the book through this link.
My partner and I find the book quite endearing. Of course we are also big fans of dinosaurs so it just ticks all the boxes. I don't think there's anything wrong with adults reading children's books, but if you have kids, vegetarian or not, this would be a wonderful book to read to them.
My summary of the review: Vegetarian propaganda at its best! And this is meant in the nicest possible way.