Species (Common Name)
Nanophyetus salmincola (salmon poisoning fluke); found in northwestern US, southwestern Canada, and Siberia
Cats eat raw or improperly prepared salmon and similar fish
Heavy infection causes enteritis (inflammation of the intestines). Infection is compounded by rickettsial infection carried by flukes (“salmon poisoning disease”).
Alaria species; found in North America, South America, Europe, Australia, and Japan
Cats eat hosts (frogs, reptiles, rodents)
Heavy infection can cause bleeding in the lungs (larval migration damage) or enteritis (inflammation of the intestines caused by adult flukes).
Opisthorchis species; found in eastern Europe, Italy, parts of Asia
Cats eat certain fish
Longterm presence causes thickening and scarring of bile and/or pancreatic duct walls. Fluid may build up in the abdomen. Liver or pancreatic cancer has been seen in longterm and severe cases.
Platynosomum concinnum; found in southeastern US, Puerto Rico and other Caribbean Islands, South America, Malaysia, Hawaii and other Pacific islands, and parts of Africa
Cats acquire parasite by eating infected lizards and frogs
Mild cases seen as general unthriftiness. Severe cases (“lizard poisoning”) characterized by loss of appetite, lethargy, vomiting, diarrhea, jaundice, and enlarged abdomen, leading to death.
Eurytrema procyonis; found in eastern US
Rare; cats acquire by feeding on infected snails or possibly insects
Weight loss and intermittent vomiting, but may cause no signs.