Wolf

Wolf, also known as Vandal, is Grady Tucker's dog. He appeared in the fourteenth Goosebumps book, The Werewolf of Fever Swamp, and its television adaptation.

History
The dog runs into the house, pounces on Grady, and licks his face. Grady becomes attached to the dog and decides to keep him. He names him Wolf because he looks like one. Over the nights, there are animal killings, and Emily and Grady's parents all accuse Wolf of being the killer. Grady's dad even tried to get rid of him, but Wolf ran into the forest just in time. Grady's friend, Cassie says it was a Werewolf, and she happens to be right. Grady assumes it's the Swamp Hermit, but, it was actually his friend, Will Blake. He bites Grady, but then Wolf comes to the rescue and fights off Will. Grady becomes the new Werewolf of Fever Swamp, and every full moon night, he hunts with Wolf.

Physical appearance
He has the appearance of a wolf: gray fur, a black nose, and long hair. However, in the television adaptation, he have brown and black fur with reddish brown eyes even looks more like a dog than a wolf

Trivia

 * In the television adaptation, Grady's dog is named "Vandal" instead of Wolf.