Waheela are never seen in packs, so are presumably solitary. Native legends describe the Waheela as an evil sprit with supernatural powers, and it is said to be responsible for the many mysterious deaths that have occurred in Nahanni Valley, also known as "Headless Valley" because the people who died here mysteriously all had missing heads. It has been theorized that the Waheela is an Amphicyonid (bear-dog), a dire wolf, a prehistoric hyena, or a completely new species of canine.
The area where the waheela is sighted is one of the most remote places in the world. The fact that these lands are relatively unexplored means that there is a fair chance of discovering new kinds of animal there, perhaps including one that was supposed to have died out ten thousand years ago.
With bipedal hairy humanoids and monstrous wolves being sighted in the same area and blamed for the same violent deaths, it might also be that we have werewolf beliefs being thrown into the mix as well, to make things even more confusing.