Cat dog dog : the story of a blended family / words by Nelly Buchet ; art by Andrea Zuill.

Enhanced descriptions from Syndetics:

Here is the oh-so-hilarious and adorable story of a blended family-- using just a few words in various configurations-- from the pets' point-of-view!

Cat and Dog live with their human in a suburban house with a big backyard. Sure, they fight like.... well, cats and dogs, but they're used to one another. Dog-- a different dog-- lives a happy only child life in the city with his dad. He has the bed to himself, he never has to share his toys, and that's the way he likes it. So what happens when the Dog's dad and Cat and Dog's mom move in together? Well, it's chaotic. There's not enough room on the bed, for starters. But as the seasons pass, the three animals become a trio and learn to (mostly) love one another. Just as they're settling into a cozy life as a threesome, along comes..... a baby! This laugh-out-loud picture book, which is the recipient of The Irma Simonton Black and James H. Black Award for Excellence in Children's Literature, cleverly uses two repeating words and is sure to strike a chord with kids dealing with the ups-and-downs of settling into a blended family of their own.