Reindeer, like other deer, are ruminants, and like other ruminants, about 10 per cent will carry E. coli O157:H7 and relatives at any particular time.
So when a farmer, or huckster, promoting tourism at his reindeer farm says,
"About the worst that could happen is she could poop on you, but that’s not really a problem because they really just poop raisins," he said. Raisins are a favorite part of the reindeer diet at the farm.
"Or she could pee on you, but I wouldn’t worry, because I think I’ve heard something about reindeer pee, Christmas and good luck."
They aren’t poop raisins. Don’t eat poop.