[Vasya Gondorsky]

`Because these horses are born and bred to the service of the Dark Lord in Mordor. Not all his servants and chattels are wraiths! There are orcs and trolls, there are wargs and werewolves; and there have been and still are many Men, warriors and kings, that walk alive under the Sun, and yet are under his sway. And their number is growing daily.'

А волколак, насколько я понимаю, это волк-обортень на белорусском, а может быть и на русском, просто слово редкое. Так что это вполне адекватный перевод werewolf-а