- Sharks can sense a drop of blood from 4km (2.5miles) away.
- The Great Wall of China is approximately 6,430 Km long (3,995 miles).
- The fingerprints of koala bear are indistinguishable to that of a human.
- A person produces enough saliva to fill 2 average size swimming pools during their lifetime.
- Frogs don't usually swallow water (they absorb most of the moisture they need through their skin).
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