The Numbers Are Stranger Than You Think
The African elephant sleeps roughly two hours per night, often while standing. The little brown bat, Myotis lucifugus, sleeps close to twenty hours. The domestic cat, which most Indian households treat as an occasional visitor or a permanent resident depending on the building's bylaws, averages fifteen hours. These are not approximations, sleep researchers have measured them with electroencephalogram recordings across dozens of species, and the spread is enormous.
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