Werewolf of Fever Swamp (Classic Goosebumps #11)

"It started with the strange howling at night. Then there was the rabbit, torn to shreds. Everyone thinks Grady's new dog is responsible. After all, he looks just like a wolf. And he seems a little on the wild side. But Grady knows his dog is just a regular old dog. And most dogs don't howl at the moon ... or change into terrifying creatures when the moon is full." P. [4] of cover.