Jekyll's Bad Mood (Board Book) (ISBN-13: 9781523512737)

Jen Arena has written over 50 books for kids, both fiction and nonfiction, including Marta! Big and Small, Besos for Baby and her most recent picture book, Acorn Was a Little Wild. Jen lives in Tampa, FL with her husband Dar? and a very bossy black dog.

Betowers is an artist and animator from Spain, where she grew up surrounded by crayons and brewing potions with felt-tip ink, imagining she was a little witch. She's worked with various magazines and publishers around the world, bringing her humor and vibrant colors to her characters to inspire the little readers who will build the future.