Celtic Heroes

Una the Furrier wants me to bring her Pristine Grey Wolf Pelts from Grey Growlers.
I have been killing wolves in the valley for hours. Ive killed all different kinds of wolves, scrawny one, grey wolves, red wolves, frostfang wolves(got all the fangs I need) but I can not get a grey growler to spawn. I would love some help in locating these wolves. I understand the quest reward isnt worth the trouble but I really just want to get the quest out of my log

Don't bother with red wolves or frostfangs. Just focus on killing any form of grey wolf. It is just a rare drop. Grey Growlers are most likely to drop them, but expect to put in a few hours trying to get the drop.

am I in the right spot? the wolves I am killing are around level8-9