Guinness caught a mouse last week. I think she was as surprised as we were. She was very interested in a tarp out back at the cabin and when we moved it a mouse ran out. She grabbed it and we immediately told her to drop it, which she did. It didn't move and my SO tossed it into the woods. He said it was alive. Guinness was rewarded profusely.
I feel bad for the furry little things, but we really don't want them in the house. After the mouse incident Guinness was sniffing along the wall to the kitchen and acting very interested. We set traps there for the first time and found them full when we got back.
As a true mountain woman I realize that mice can be a problem if not kept under control. Our terrier is now an official working dog and living up to her Irish farmdog heritage.