Katherine Applegate is a #1 New York Times -bestselling author who has written many children's books, including The One and Only Ivan , which won a Newbery Medal; The One and Only Bob ; Wishtree ; and the Doggo and Pupper series. Her novel, Odder, from which this book is adapted, was a #1 New York Times bestseller and spent over 52 weeks on the bestseller list. She is also the coauthor, with Gennifer Choldenko, of Dogtown and Mouse and His Dog: A Dogtown Book . Katherine Applegate lives in Nevada with her loyal husband and her naughty dog. You can visit her at katherineapplegate.com. Charles Santoso loves drawing little things in his little journal and dreams about funny, wondrous stories. He is the creator of Happy Hippo and has illustrated many books, including Ida, Always , written by Caron Levis, which was praised by the New York Times as "an example of children's books at their best.

" He has also illustrated the New York Times bestsellers Wishtree and Odder , by Katherine Applegate. He moves between different countries to live and work but calls Sydney, Australia, home. You can visit him at charlessantoso.com.