Books like Who's Hiding?

I was drawn to the characters on the front cover of this book but once I opened it, I instantly fell in love with it. There are animals on the first two pages (dog, tiger, hippo, zebra, bear, reindeer, and so forth), each animal has a blank/neutral expression on their faces and are different colors, although the colors do repeat (ex: the pig, rabbit, bear, and elephant are all blue). The position of the animals never changes on any of the pages, but on the top of each page there is a question, "who's hiding?" and the child will have to look around to all the animals to see who blends in with the background since each alternating page is a different color. I can see this book teaching about feelings (questions include: Who's crying? Who's angry?) as well as the different colors. I liked the idea that children will want to memorize the position of each animal in order to seek the animal(s) in the questions much faster. There is an answer key in the back for self-correcting. I would recommend this book for pre-K and early elementary (K-3).