If you’ve ever watched a cat or a dog sleeping, you could tell if it was dreaming. But did you know you can tell while an octopus is dreaming, too? In fact, you can probably even guess approximately what it’s dreaming about.
Professor David Scheel witnessed a remarkable moment of an octopus dreaming and rapidly changing colors in its sleep. He filmed the entire thing, and it could be the first time a dreaming octopus has ever been caught on camera.