"Beware Wolf" is the second episode of the second season of Wizards of Waverly Place.
Justin meets a girl named Isabella through WizFace. Alex has suspicions that Isabella is not who she seems. After sharing a kiss, Justin learns that Isabella is actually a werewolf and, worse, he is becoming one himself. Meanwhile, Max and Alfred start a dog-walking business to earn money for cups on a chain.
- Werewolf (monster)
Guest stars: Sarah Ramos as Isabella, Andy Pessoa as Alfred
Co-stars: Renna Nightingale as a Centaur Girl, Danielle O'Loughlin as Older Woman
Notes: WizFace is a parody of Facebook and MySpace. Alex also said that Justin had a history of dating monsters, as explained here as well in a few other episodes.