There is a good-sized trout near that riverbank, near the left edge of the picture.

Mice can really swim, and when I dump them out of my life trap into the river, some of them have managed to reach the shore and get out to dry land. I hate to think of them coming back into the house.

This morning when I dumped a mouse into the river, it started swimming valiantly for the shore, and I thought it was going to make it, when all of a sudden a trout came up and pulled it under. I could see the mouse underwater, its foot in the fish's mouth. The current washed them out of sight down the stream, so I don't know the outcome.

It was a medium size mouse, and a medium size fish. I don't think the fish's mouth would be large enough to swallow it whole, but I hope the fish gave that mouse a hard time.