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Scientists Have Been Quietly Studying Cats for Decades. The Results Are Unsettling.
Cats have been domesticated for roughly 10,000 years. In that time, they have changed almost nothing about themselves. Dogs were selectively bred into hundreds of shapes and temperaments to serve human needs. Cats, by most accounts, simply moved in, decided the arrangement suited them, and stayed largely the same animal they were in the wild. Biologists have a word for this: cats are functionally self-domesticated.
The engineering underneath that indifference is, by any measure, extraordinary. A cat’s inner ear contains a reflex system so precise that it can detect disorientation and begin correcting its body position in mid-air within 30 milliseconds, faster than the human eye can register movement. It is called the righting reflex, and it is why a cat dropped from height almost always lands on its feet. Biomechanics researchers at various institutions have spent years reverse-engineering it and still can’t fully replicate it mechanically.
Their purring turns out to not be purely emotional. The vibration frequency, between 25 and 150 Hz, sits within the range that stimulates bone density and promotes tissue regeneration. Some veterinary researchers believe this is why cats recover from orthopedic injuries at rates that consistently surprise clinicians. The cat, while appearing to simply sit on a couch, is running internal repair cycles.
The night vision advantage over humans, roughly six times greater sensitivity in low light, comes from a reflective layer behind the retina called the tapetum lucidum. It’s the same layer that makes cats’ eyes glow in the dark. Every feature that seems decorative has a function.
For 10,000 years, humans thought they adopted the cat. Current evidence suggests the cat evaluated the offer and accepted it on its own terms.
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