
Consciousness: Where Does It Come From?
Sidenote by AsapSCIENCE
Do We Only Have REM Sleep?
Seals and dolphins sleep with half their brand at a time. Koala sleep for 22 hours a day, which is so cute. Newborn killer whales don't sleep at all. And there's like truly fish. Well, you know, in some ways fish are more involved than dogs. They've been around longer, just like the birds. So they can recognize themselves.
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