- Shark's teeth are literally as hard as steel.
- Shark's top speed is 70kmh (44mph).
- Shrimp has 5 pairs of legs.
- Shrimps are all born male but slowly grow into females.
- Skeleton of an African elephant accounts for about 15% of its body weight.
- Small dogs usually live longer than larger breeds.
- Snakes can't bite in rivers or swamps (they would drown otherwise).
- Snakes can't blink.
- Some dinosaurs had tails over 13m (45 feet) long.
- Spiders are arachnids and not insects.
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