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Cheetahs reach 45 mph in 2.5 seconds

A cheetah can accelerate from zero to 45 miles per hour in just 2.5 seconds.

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A sprinting cheetah completes four strides a second. Its top speed of 60 to 70 miles per hour can be held for only about 300 yards.

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No two tigers have the same stripes

Like a human fingerprint, a tiger's stripe pattern is unique to that animal.

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Fennec foxes are the smallest wild canids

Fennec foxes are the smallest members of the dog family and can go long periods without drinking water.

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Ostriches have the largest eyes of any bird

An ostrich's eyes are about 2 inches wide, the largest of any bird.

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