if you go to this page about the eastern grey squirrel, and scroll down to the bottom of the page, the relationships in nature table lists, under prey/food - the American Bald Eagle! Who knew!
Jim says they are more dangerous than drop bears.
I did know that one once frightened my mum as she was getting out of my car which she had borrowed to go to the Dairy Barn. She was so startled, she brought her hands together, each holding the handle of a glass half gallon of milk - showering my little yellow nova in glass shards and dairy. Cats followed me for days, and then it smelled like a baby had been sick in the back for another month.