Werewolf of Fever Swamp (Classic Goosebumps #11)

In Fever Swamp, unsettling events unfold as mysterious howling disrupts the night and a gruesome rabbit incident raises suspicions. Grady's new dog, resembling a wolf and exhibiting wild behavior, becomes the prime suspect in this eerie atmosphere. As fear spreads among the townsfolk, Grady must confront the truth behind the strange occurrences and his dog's true nature.