As you've no doubt discovered by now, some people are a lot more comfortable with staying cooped up inside than others.
While it's true that staying indoors and simply avoiding other people aren't mutually exclusive, not everyone can be assured that they'll be able to keep socially distancing if they start wandering around.
But at the same time, there's an advantage to not straying too far afield anyway. While it's not necessarily likely that you'll run into most of the animals on this list, there's probably at least one creature in your area that could mess you up if it wanted to.
And the ones we're about to see today are absolutely in that mode.