Became Wolf

And after that Loki hid himself in the waterfall of Franangr, in the shape of a salmon. There the Æsir caught him. He was bound with the guts of his son Nari. But his son Narfi turned into a wolf. Skadi took a poisonous snake and fastened it over Loki’s face; poison dripped down from it. Sigyn, Loki’s wife, sat there and held a basin under the poison. But when the basin was full, she carried the poison out; and meanwhile the poison fell on Loki. Then he writhed so violently at this that all the earth shook from it; those are now called earthquakes.


- Poetic Edda, Lokasenna