Let’s say you’re on safari in Southern Africa. It’s a once-in-a-lifetime opportunity, so you soak in the sights, traipsing through the sandy shores of Namibia. It’s beautiful, even epic, but dangers ...

Its quick-digging antics are kind of endearing (I could watch it toss sand on its head pretty much all day.) At least, until you realize that this six-eyed sand spider is only covering itself so that ...