The One and Only Ivan by Katherine Applegate
You might want to seriously consider reading this book. This famous author make a special effort to mix a true story with fictional elements. Please consider reading this book at a slower pace. Even though the chapters are very short, you will want to savor every word the characters have to share. Read this book if you like animals. Read this book if you empathasize with animals and would like to think of possible ways to communicate with them.
Ivan is one of the animals that live and perform at a run-down mall. Even though he is a silverback gorilla, he paints picures. He remembers his sister and where he came from. He has accepted his life in his domain (cage). He makes a promise to the elephant before she dies that he will find a way to get freedom for a new baby elephant. Ivan never loses it until he sees the baby elephant mistreated. How can a gorilla help free an elephant?