Animals Wildlife Jumping Spiders Chase Laser Pointers Just Like Cats Do (Video) By Melissa Breyer Editorial Director Hunter College F.I.T., State University of New York Cornell University Melissa Breyer is Treehugger’s editorial director. She is a sustainability expert and author whose work has been published by the New York Times and National Geographic, among others. our editorial process Melissa Breyer Updated October 11, 2018 CC BY 2.0. Max Pixel Share Twitter Pinterest Email Animals Wildlife Pets Animal Rights Endangered Species The eyes of the wonderfully wacky jumping spider are like Galilean telescopes and can see everything from laser lights to the moon. There is a completely charming story in The Atlantic written by Ed Yong that recounts a "lovely Twitter geek-out between astronomers and arachnologists." Thanks to this tale of tweets and scientific inquiry, I learned something very important: Jumping spiders chase laser pointers. It's all so unlikely. These are the spiders that do the world's most remarkable courtship ritual – which is something like the work of a modern dance maestro combined with a mesmerist. See exhibit A: But that's almost nothing compared to the fact that these tiny little critters have some seriously cool peepers. Yong explains that the jumping spider's eyes are built like Galilean telescopes. "These telescopes, which Galileo started using in 1609, are basically tubes with a lens at each end. Only three groups of animals have similar eyes: falcons, chameleons, and jumping spiders," he writes. There's a longer discussion about the wonder of all of this; how the spiders are more sensitive to green lasers than red – and that scientists have calculated that these guys and gals can even see the moon! I recommend reading the whole thing, but in the meantime, this: And as it turns out, this isn't the first time this has come to light, so to speak. So there you go. If you don't have a cat to play with, check for spiders! And this could be a great tool for the arachnophobic that share their space with jumping spiders ... just take the laser pointer and show your eight-legged guests the door. The article in its entirity is here: Tiny Jumping Spiders Can See the Moon.