Goat is jealous when a cool new unicorn moves to the neighborhood. Can they work it out? Does Goat have special things to offer, too? Is Unicorn really as stuck up as Goat thinks? "Unicorn Thinks He's Pretty Great," by Bob Shea
A is for Angry by Sandra Boynton - Although it should be a fairly quick book, it was pretty advanced for my kids. We pretty much had to stop and discuss each and every adjective, so it was a bit of a slog, and I'm not really sure they are ready to incorporate any of that language into their vocabulary yet. Oh, well.