seeing-eye horses   (link)

http://www.guidehorse.org/photo_page.htm
creepy little horses that got shrunk by an uber shrink ray so they're small enough to go inside and lead blind people around

"Twinkie learned to negotiate an escalator and elevator. At a local restaurant, she was trained to stand under the table and nap while her owners ate lunch. And she was housebroken within a week—tapping her hoof at the door when nature called."