Tomo, wolves are apex predators they hunt in packs, they go for the big boys, i.e ungulates animals with hooves...bison,deer,etc,etc
I cannot see them wasting energy on a few mouthfuls to feed the pack, for so little return..So disagree with that theory..
I think its more to do with the land and terrain they originated in...open plains, grasslands, reduced cover the brown hare was supposedly introduced just like the rabbit, the mountain hare is our true native hare..
I believe Arctic wolves will hunt hares in a manor similar to modern coursing, hunting the hares by sight and runnin