Inspiration: White German Shepard. I wasn't sure if they were appropriate for Grandheim or not, but I like 'em. They would be big dogs, big, tough, solid dogs made for running and fighting.
Thorrlundt Hound
Inspiration: THis beautiful mutt called Aero. All-purpose hounds, bright-eyed, intelligent, the like. THey would come in varying shades of white, gray, and black.
Nuuit Hunting Dog (Geri)
Inspiration: Black Fox. Small, fast, ferocious hunting dogs, closely related to (but much smaller than) the Nuuit Sled Dog. Black in coloration, with some silver or white markings.
Nuuit Sled Dog (Freki)
Inspiration: BLack Wolf. Big, heavy, powerful working dogs that pull sleds and carts. Similar to the Nuuit Hunting Dogs.
RANDOM PICTURES OF INTERESTING DOGS
That one's actually an animatronic prop from a "Hound of the Baskervilles" movie.
Soooo…help me think up more breeds.