Discover Series Books for Babies & Toddlers It's time for doggie dress up! These cute pooches put on their best in this Discover Series Picture Book. DOGS ALL DRESSED UP features 25 dogs in a wide range of costumes. Babies and toddlers will love flipping through the simple and colorful photos while older children can't help but laugh at a dog in a tutu. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new images, words and concepts to kids.