The One and Only Ivan is a children's novel written by
Katherine Applegate and illustrated by Patricia Castelao. The book is about a gorilla named Ivan who lives in a cage at a mall. The novel is written in first person from the point of view of Ivan, a
silverback gorilla. In 2013 it was named the winner of the
Newbery Medal. It has won several other awards and is currently nominated to several reading lists.