I'm a vet and have treated several dogs for salmon poisoning. A word of caution: Don't assume that a dog with a history of salmon disease is immune. The immunity issue has never been proven. I met one person who claimed their dog got the disease twice. This is the time of year we see it. Usually the dog has been let to roam freely along a fish-bearing stream within the last week before coming in.

Tight lines,

WC
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If every fisherman would pick up one piece of trash, we'd have cleaner rivers and more access.