Mink by Grass River in Degrasse

This was an extremely lucky catch for me. The mink was crossing a wide expanse of riverside rock when I happened along. It ran back out of sight. I backed up, sat down and waited. In two minutes the mink reappeared, and hurriedly continued across the rock and into a lair.
It was dark brown and shiny, and still wet, the small fish just caught.
I have never seen a mink in the wild before.
I'm going with Paul Jamieson's spelling of the river's name.