Mink with Rat

Wasatch Mountains, Alpine Scenic Loop
I really am not sure what kind of animal this is. It didn't look like an otter to me by the way it moved and acted, but I don't know if animals like mink even are native to this area. Still, it found itself a nice catch, and didn't seem to mind showing it off. If you can identify it, please let me know!
©Bill Yeaton