It's pay back for all that bad press for kitty poop. While cat waste and accompanying parasites are believed to cause infections and death in sea otters and infections in harbor seals, now dogs are being fingered (pawed?) for the foul freeloaders in their feces.

New research from the nonprofit SeaDoc Society finds that about 40 percent of Puget Sound harbor seals are infected with Giardia, a nasty little parasite that plagues intestinal systems. Some seals in south Puget Sound have seal Giardia, while others are infected with a canine form of the protozoa.

The Seattle P.I. has the rest of this story.