"Deadly Dog Parasite Spreading in Southern California Rivers"

The potentially fatal parasite Heterobilharzia Americana, also known as liver fluke, has been discovered in a portion of the Colorado River in Blythe, Southern California, posing a threat to dogs. The parasite, transmitted by certain snails, can cause granulomatous gastrointestinal and hepatic disease in dogs, with symptoms including vomiting, diarrhea, and weight loss. While it can be filtered out with common water purification methods and does not cause disease in humans, pet owners are advised to be cautious when swimming with their dogs in the area.