No silver bullets necessary!
Sure, it was a little weird that he developed a taste for nearly-raw steak, but hey, everyone gets cravings once in a while.. He'd gotten his rabies shot already, and the puncture marks scabbed over like normal. When activated, its eyes glow in its snarling face, its head moves back and forth to track its victims, and it plays fearsome pre-recorded sound effects! Bad Dog! Having a werewolf make an appearance at your party this year would give you amazing bragging rights! The trouble is, most werewolves tend to want to bite people, and that puts a damper on any bash.