Wererats (alternately known as ratmen) were lycanthropes common in urban areas. Wererats could transform into giant rats. A wererat in humanoid form tended to be a thin, wiry individual of shorter than average height. The eyes constantly darted around, and the nose and mouth may have twitched if he or she was excited. Males often have thin, ragged mustaches. The animal form of a wererat was that of a dire rat two feet long from nose to rump. In hybrid form, the wererat was shorter than in its human form and its head, torso and tail were those of a rat while its limbs were a little more humanoid in appearance.