...and their very weird draft animals????
Thor: goats, Freyja:cats...
oh, and it seems "warg" is from Norse myth too.
I've spent some time with Viking reinactors (www.longshipco.org), and driven a few goat carts, and trained a few pigs.
I can't imagine riding them... gaaaaaaaaaaaaaaaaaaaahhhhhhhhh those Dwarves are tough.
One thing about pigs: the wild boar can take off in short bursts of 30 -35 mph, but cannot maintain their speed (to quote Gimli in LOTR; "natural sprinters, very dangerous over short distances"). They are very powerful close to the ground; they're built like bulldozers, and have very large jaws. They're also really really intelligent.