Three studies show that dogs fed fish oil (high omega-3 fatty acid) improved in mobility and showed less pain. Believers of the power of fish oil (myself included) are not surprised, but at least now we have clinical proof.
I know my 10 year old Bijon, Cody used to be arthritic and walked crippley. Now he runs around with the big doods. I thought it was the homecooking, but it might be that and the fish oil.