The Dire Wolf (Canis dirus) is a carnivorous mammal of the genus Canis, and is most common in the Forbidden Mountains.
Although it is closely related to the outworld Gray Wolf and considered a sister species, Canis dirus is not the direct ancestor of any species known today.
The Dire Wolf is slightly larger than the Gray Wolf, averaging about 1.5 metres (5 ft) in length and weighing about 57–79 kilograms (125–175 lb). Despite superficial similarities to the Gray Wolf, there are significant differences between the two species. The legs of the Dire Wolf are proportionally shorter and sturdier than those of the Gray Wolf, and its brain case is smaller than that of a similarly-sized gray wolf.
The Dire Wolf's teeth are similar to the Gray Wolf's, only slightly larger. The upper carnassials have a much larger blade than that of the Gray Wolf, indicating greater slicing ability. It has a longer temporal fossa and broader zygomatic arches, and a large temporalis muscle capable of generating slightly more force than a Gray Wolf's.