A string of comically stylized animals greet each other in masterfully rhyming couplets—an owl’s “hoo†is answered by a cow’s “mooâ€; a crow’s “caw†is returned with a donkey’s “hee-hawâ€â€”all leading up to the “hi!†and “good-bye!†of a human toddler and his mom! The first in a brand-new board book series on animal (and human) first words by award-winning author and illustrator Ethan Long. Also by Ethan Long: Thank You! and Lion & Tiger & Bear: Tag, You're It!