Sweet dreams, spiders! 🕷 After noticing jumping spiders suspended at night from threads of silk in their lab containers, a research team at the University of Konstanz in Germany wondered: Do spiders sleep? Do they dream? To find out, the research team tracked baby jumping spiders at night. Camera footage showed patterns that looked a lot like sleep cycles. The spiders' legs twitched and parts of their eyes flickered. The spiders' overnight movements looked a lot like REM in other species, researchers said – like dogs or cats twitching in their sleep. And they happened in regular cycles, similar to sleep patterns in humans. Researchers described this pattern as a "REM sleep-like state." In humans, REM, or rapid eye movement, is an active phase of sleep when parts of the brain light up with activity and is closely linked with dreaming. 🔗 Learn more at our link in bio.