About the Book Siblings come in all shapes and sizes. They even sometimes have paws. Follow along with Brennen as he plays with his siblings Roxie, a lovable Rottweiler, and Bella, a playful Labrador retriever, and see what they like to do together. Book Synopsis Siblings come in all shapes and sizes. They even sometimes have paws. Follow along with Brennen as he plays with his siblings Roxie, a lovable Rottweiler, and Bella, a playful Labrador retriever, and see what they like to do together. Do your siblings have paws?