https://apnews.com/27b23d77d2397780f00a86201cadcfd7 > NEW YORK (AP) — It's a question that keeps some scientists awake at night: Do spiders sleep? > Daniela Roessler and her colleagues trained cameras on baby jumping spiders at night to find out. The footage showed patterns that looked a lot like sleep cycles: The spiders' legs twitched and parts of their eyes flickered.