There are 4 books in the Bat series. The newest book is Bat and the Business of Ferrets which came out in 2025.

The first book in a funny, heartfelt, and irresistible young middle grade series starring an unforgettable young boy on the autism spectrum.

For Bixby Alexander Tam (nicknamed Bat), life tends to be full of surprises-some of them good, some not so good. Today, though, is a good-surprise day. Bat's mom,…

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2
Bat and the Waiting Game

By Elana K. Arnold , Charles Santoso (illustrator) ,

Book cover of Bat and the Waiting Game

In the tradition of Clementine and Ramona Quimby, meet Bat. Author Elana K. Arnold returns with another irresistible story of friendship in this widely acclaimed series starring an unforgettable boy on the autism spectrum.

For Bixby Alexander Tam (nicknamed Bat), life is pretty great. He's the caretaker of the best…

3
Bat and the End of Everything

By Elana K. Arnold , Charles Santoso (illustrator) ,

Book cover of Bat and the End of Everything

The third book in the funny and joyful series Katherine Applegate has called "tender and important," by National Book Award finalist Elana K. Arnold.

Bixby Alexander Tam (nicknamed Bat) has been the caretaker for Thor, the best skunk kit in the world...but the last day of third grade is quickly…

4
Bat and the Business of Ferrets

Book cover of Bat and the Business of Ferrets

The bestselling Bat returns! Bat and the Business of Ferrets is the fourth title in National Book Award finalist Elana K. Arnold's heartfelt and widely acclaimed series featuring an unforgettable young boy on the autism spectrum.

Bixby Alexander Tam (nicknamed “Bat”) is about to start fourth grade—and unfortunately for him,…