Wolves have many names in Estonian besides the official name "hunt", which actually comes from German, original name was "susi" (same as in Finnish) and it's still used. Other names for wolf are "hallivatimees" (man of gray coat), "kriimsilm" (scratch eye), "sorusaba" (droopy tail) and the list goes on, because according to old tradition and beliefe if you called someone by their real name you were summoning them. One of wolf's alternative name is also Püha Jüri kutsikas (pup of Saint-George). Wolves with such name were the ones who hunted down ghosts, visitants and wraiths like "külmkingad" ("cold shoe"?) and black men/people/creatures. So if you have trouble with shadowlurkers then call wolves for help (though some legends say you have to across a crossroad before calling for wolves because or else wraiths will kill you or take you away).
According to legends after the wraith/evil spirit is killed by wolf then only thing left of the ghost is greenish (in some stories blue) water.
Most of the stories where wolves kill evil spirits are like that:
Man or woman goes home by a forest road while carrying somthing in their hand or driving on a carrige/sleigh. Suddenly a wolf pack is on the path (sometimes they howl the same time). So the man or woman asks the wolf to free the way and wolves step away. When the person passes by wolves then a black creature or shadow jumps of his or her fardel and the wolves kill it.
There are some visitants like külmkingad who can't be killed by the first time. They must have been stricken by lightning three times and eaten by wolves three times.
and check out my other entry: [link]