Napoleon was attacked (and defeated) by a horde of rabbits.
Why it is true
During an organized hunt, domesticated rabbits were released but instead of fleeing, they attacked Napoleon en masse.
Source: Historical Records
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.