No, Elijah Wood is not starring in a Michael Phelps biopic.

PHOTOS: Elijah Wood Films Wilfred

Actually, the Lord Of The Rings star, seen here with a giant man-dog  eating cotton candy (played by Jason Gann), was  merely  filming a scene for  his wacky new FX series Wilfred in Santa Monica , CA. on  Monday, and RadarOnline.com has all the pictures for you.