What's howling? Bat and Sloth are going to find out.

Bath and Sloth are trying to sleep when they hear a noise. A LOUD noise. Can Bat and Sloth figure out where it's coming from and how to make it stop?

Discover how Bat and Sloth become friends, join in the fun as they throw a party, and follow the clues as they solve a mystery with this four book set. The set includes all four paperback books in the Bat and Sloth series: Bat and Sloth Hang Around; Bat and Sloth Lost and Found; Bat and Sloth Throw a Party; Bat and Sloth Solve a Mystery.

Bat wants to throw a party. Sloth's not so sure. He'd rather sleep. But with ghost stories and banango cake, both friends find a way to have fun.

Iggy is just like all young dinosaurs. He wants to play with his older brother, and he doesn't want to eat his green ferns.

Tessy is so excited to have a sleepover with Newton, full of midnight snacks and bedtime stories and pillow fights. But Newton just wants to sleep! Can the friends find a way for both of them to have fun?

One night, when Bat wakes up at his usual time, he discovers a two-toed sloth hanging next to him—on his branch! Can Bat and Sloth be friends? Sloth thinks so. Bat's not so sure.