Here's the story as told by the WI DNR.
"These photos were taken by Dan & Arlette Schweitzer, of Keystone, SD on October 9, 2008. The photos are of an adult female cougar and apparently her 2 nearly grown cubs. They were feeding a white-tailed deer killed by the cougars near the Schweitzer property just west of Hayward, SD, and about 4 miles east of Keystone. The adult female has a yellow ear tag, and cougar researcher, Brian Jansen of South Dakota State University, believes she was a study animal that had recently slipped her collar. The pictures are not of any cougars in Buffalo or Trempealeau Counties in WI, or any location in northern Minnesota"
I know many doubt that the DNR tells the truth about anything but I feel that this sounds more plausable than the stories I have heard at the tavern lately concerning these cougars....