User blog comment:B214/Question and Answers 6/@comment-3965848-20180417080754/@comment-29963364-20180417084107

They're Jotunn in the form of wolves.

On a side-not, despite popular belief, Jotunn doesn't mean "Giant." It means "Devourer."

They're basically a supernatural, shape-shifting race that embody the destructive/chaotic aspect(s) of nature.

Jotunn - Chaotic Nature (Loki and his family)

Vanir - Peaceful Nature (Freyr & Freya)

Easir - Civilization (Odin, Thor, Vidar, Baldr, etc.)