Science Are humans to blame for cheetah decline? Yes, say scientists.

An international team of researchers studied the energy expenditures of cheetahs in southern Africa and discovered that time spent looking for food is what really wears them down.

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Jacquelyn Martin/AP

We tend to view cheetahs as super-mammals: they have exceptional eyesight, are experts in stealth, can go days without rehydrating, and have the ability to accelerate from 0 to 60 miles in just 3 seconds. But these fast felines are more vulnerable than one might think.