You'd think by now that we would know what to expect from nature. It's going to throw crazy weather at us sometimes, but most days will be within a certain normal range. It's going to give us things that make our bodies unique and different, and it's going to give us some challenges, too, but basically people are going to be people, dogs are going to be dogs, and so on.
But don't ever imagine that nature doesn't have some surprises in store for us too.