trout

Jim Cole / AP Photo

Fishermen around the Northwest are enjoying some exceptional salmon runs this autumn. Puget Sound is teeming with pink salmon and there's a record-breaking fall Chinook run in the Columbia and Snake Rivers. But as fish move upstream to spawn, danger lurks for dogs.

Dr. Scott Capsey had his first encounter with "salmon poisoning" years before he became a vet. His family's normally exuberant golden retriever mysteriously turned lethargic, had diarrhea and lots of vomiting.

"They didn't know if she was going to make it. I remember that conversation,” Capsey said.