Shirley Kittleson has unwanted guests. They eat too much and they won’t go home, but Kittleson’s guests aren’t holiday visitors. They’re miniature horses — a herd of 72 that was dumped on her after Humane Society officials took them from a farm where they were being mistreated. The small-town Minnesota veterinarian has housed the horses for 18 months, but no one will pay the $325,000 she spent on their care. To donate, search “Shirley Kittleson” on the GoFundMe site, her fundraiser will appear.