I'm not sure what I would do about a material that itemsyndromes people to berserkers. I like the idea, and I've considered making it a temporary syndrome gained by eating a slow growing crop (I remember reading that some berserkers were meant to partake of hallucinogenics to 'rage') but there's no way to stop that being randomly munched by non-combatants. I could put in a reaction to make wolf pelts into a special kind of leather that grants the raging ability, but that just means hunting wolves when available becomes a big thing while berserkers become rare in embarks without wolves. Perhaps I could make a reaction that requires some stuff made by the dokalfr to complete it.
I wasn't suggesting regular wolves as much as some kind of rare solitary monster wolf/bear that lives forever. Perhaps something like large predatory animals that have been touched by a dead dragon's blood, making them crazy predatory monsters. Kill 'em, skin 'em, get pelts that pass on some of that dragon blood power. Could also be that the pelts have weaker benefits than direct dragon blood, but you can take them from your dead for further use.
The first thing that comes to mind when I hear "monster wolf" is Garmr, but he's a hound, not a wolf, IIRC.
Off the top of my head, the only other wolves in Norse mythology that I know of would be Fenrir and his brood, Hati and Skoll.
Searches for Norse bears in Google just redirect me to either berserkers or were-bears.
It's the way dragon blood works in the mod that makes me suggest this method. In stories and mythology, the point is often to make some kind of point, they use dragons and dragon blood and all that as metaphors. Creating a large fantasy world where heroes run around at random to kill monsters isn't really the intention behind them, but since that that is (part of) the intention behind DF, you can add stuff like that without ruining any metaphors. As I see it, the very literal existence of dragons almost invites the invention of further ways for their magic properties to influence the world around them, since they're part of a larger more living world than they are in cautionary tales and the like. So who else could come in contact with dragon blood? Scavengers, who eat the meat and blood and everything else left on a carcass. So I guess the specific kind of scavenger doesn't matter, could be big cats, birds, swarms of dragon flies (heh), rats, I just suggested wolves and bears because they're closer to Norse fauna and have a pelt that can be worn. I can't really imagine playing Norsemen in hotter biomes, see.
Edit again: Or you were talking about what to name them and not about the thematic legitimacy.