If my memory serves me correctly there is a parasite in salmon that can kill a dog if eaten. The parasite host is a snail that is eaten by the salmon and in turn can be consumed by Canids.
The question is was the dog using barbless and did he catch and release? Nice video.
__________________
Winter eats heat the way darkness swallows light. The terrors of failed power and frozen stems are stymied with fire, smoke and white ash.