The frenzy dog is a magical transformation of almost any other animal, created by the special create frenzy dog spell, used by the druids of Chondalwood to protect their environment. The spell that creates these creatures is barely known outside this forest, and the druids use it sparingly, creating a pack of only around a dozen frenzy dogs at one time, wary of their ability to ruin forest environments if left unchecked. A frenzy dog gains a certain amount of magical intelligence, but only enough for hunting.