Beep and Bah (Carolrhoda Picture Books)

Beep is a robot who hungers for adventure. Bah is a goat who wants to stay out of trouble. When Bah discovers a single sock, Beep knows there's only one thing to do: find its match! Together, Beep and Bah begin a winding journey that takes them up high hills and into the deep ocean. On the way, they'll meet monkeys, whales, and angry bears--but will they find the missing sock?