The bacterium, called Neorickettsia helminthoeca, is transmitted by parasitic worms and causes salmon poisoning.

The poisoning can be fatal to dogs if left untreated. Symptoms, which can occur five to seven days after exposure, include severe vomiting and diarrhea. Most dogs survive with proper treatment.

Infection can occur when a dog eats, bites, or even licks a fish carcass.

“Dog owners should be vigilant and keep their dogs away from dead fish, especially from September through December,” ODWF said in the press release. “If you see your dog eating or even near a dead salmon or trout, take him to the veterinarian immediately. Don’t wait until your dog gets sick, as prophylactic treatments can prevent more serious illness. The sooner your dog is treated, the less likely he is to get sick and need expensive treatments.”