Native American hunters used capes of Wolf skin complete with head skin to stalk game. I would think our non native ancestors used the wolf ear hood for the same purpose. I have tried the wolf ear hood on my own dogs.......each time with the dogs initially identifying me as animal. Hunting in open country like Central Oregon, you can get very close to deer, antelope, and elk mounted on a horse. As a one time experiment years back, my hunting partner, and I walked close together, with me in back, and keeping my head down to within fifteen yards of a group of deer. When we separated those deer just exploded. My personal take on the ears was to deliberately give the impression of four legged animal. It is well know that large packs of wolves followed buffalo herds, and the buffalo paid them little heed.
Woody