Giardia is more prevalent in dogs than previously thought.

By Susan Weinstein

Caleb had been doing really well for a Bouvier about to turn 10, when his health took a mysterious dive last summer. We would learn that he was infected with an intestinal parasite called Giardia. But until he was correctly diagnosed and effectively treated, he suffered and his condition deteriorated.

Suspect a Giardia infection in any dog who has recurrent diarrhea and who has swims, wades, or drinks water from streams, lakes, ponds, or puddles.

A problematic Giardia infection is often overlooked or mistaken for other illnesses. Until only two or three years ago it was believed to be uncommon in dogs, says Dr. Andrew Peregrine, Associate Professor of Clinical Parasitology at the Ontario Veterinary College, University of Guelph. …

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