A string of comically stylised parent-and child animal pairs say good night to each other in masterful couplets -- a chick's cheep cheep is answered by a chicken's cluck cluck; a puppy's ruff ruff is returned with a dog's woof woof --all leading up to the Good night! and Sleept tight! of a human toddler and dad! This is the second title in a brand-new board book series on animal [and human] first words by award-winning author/illustrator, Ethan Long.