Fenrir is perhaps the most famous "Viking Wolf" image, often depicted as a giant beast snarling or being bound by chains.
They tried to bind him with magical chains, but he broke every one until the dwarves forged Gleipnir —a ribbon made from impossible things like the sound of a cat’s footsteps and the breath of a fish. Viking Wolf image
Born to the trickster god Loki, Fenrir grew so large and powerful that the gods feared he would destroy the world. Fenrir is perhaps the most famous "Viking Wolf"