That's actually a Great Horned Owl. There are many raptor rehab centers across the country. USF&W or your local state DNR should be able to get you in touch with one. In the meantime try not to make loud noises (excited kids) around it, handle it as little as possible and keep it's head/eyes covered (and wear heavy gloves) when you do. You'll have to have a special permit to have it so don't think about keeping it as a pet!