Lycanthropes, also known as werewolves, are Zoanthropes that transform into wolves. They are the most common, and most well known, form of therianthrope. There are countless stories of lycanthropes going on rampages and slaughtering entire villages.
Lycanthropes are rare on Eberron today, most of them killed or displaced to Lamannia during the Silver Crusade. There is still a population of them in Droaam known as the Great Pack, under the leadership of Zaeurl.