Another telltale sign is the number of eyes. A brown recluse will have only six; an American house spider has eight. American house spiders (which are actually not exclusive to America ...

And even a nibble from a house spider can leave an uncomfortable welt ... They also have six eyes instead of the eight that many other spiders have. Where you’ll find them: The brown recluse ...

The eyes are windows into the mind, and this research into what jumping spiders look at and why required a clever device that performs eye tracking, but for jumping spiders. The eyesight of these ...