Home » 7 Parasites That Can Infect Your Dog During Swimming » Page 4 7 Parasites That Can Infect Your Dog During Swimming July 6, 2016 Posted in LATEST STORIES Share: TwitterFacebookLinkedin #4 Giardiasis: is a microscopic parasite that causes diarrhea. When infected they show signs of oocysts in their stool which can persist a long time in moist areas. It is not considered life threatening. Pages: 1 2 3 4 5 6 7