In 2006, a duck egg was found with live fish inside of it!
A group of hikers found a duck egg in the French Alps that was moving. When they opened it, they found 3 live minnows inside! It’s not known how this is even possible; the people who found it said that the egg had no noticeable cracks in it. Biologists suggest that the egg must have fallen into minnow- populated water, but there’s still no telling how the fish could have gotten in there.