Even insects sleep in general. A recent finding of mutant fruit flies that don't seem to sleep (and appear fine) is actually a big deal. https://www.sciencemag

Even insects sleep in general. A recent finding of mutant fruit flies that don't seem to sleep (and appear fine) is actually a big deal. https://www.sciencemag.org/news/2019/02/scientists-say-every-animal-needs-sleep-these-fruit-flies-didn-t-get-memo https://www.sciencemag.org/news/2019/02/scientists-say-every...