The One and Only Bob (Relié)

Bob is an independent dog. He knows he could still make it on his own if he had to, even though he now has a home with his human friend Julia, regular meals, belly rubs, and a bed to call his own. But most important of all, he still gets to visit his best friends at their new home. Ivan, a silverback gorilla, and Ruby, a young elephant, live nearby in a sanctuary. A home for Bob, a home for his friends, and all the treats he could want but something's missing.
Someone is missing. Someone who Bob thought was gone, forever. Until the day he realizes she's not. A lot can go wrong in the moment left to chance, the blink of an eye, the bounce of a bone. When a hurricane hits, Bob sets out on a dangerous journey in search of his long-lost sister, with the aid of Ivan and Ruby. In this stunning sequel to the modern classic The One and Only Ivan, Katherine Applegate continues the story of Bob, Ivan, and Ruby as Bob finds courage he never knew he had and discovers the true meaning of friendship, family, and home.