Now you Know

The largest eggs in the world are laid by a shark.

A crocodiles tongue is attached to the roof of its mouth.

Crocodiles swallow stones to help them dive deeper.

Giraffes are unable to cough.

Sharks are immune to cancer.

Despite the hump, a camels spine is straight.

Cheetah's can accelerate from 0 to 70 km/h in 3 seconds.

A giraffe's neck contains the same number of vertebrae as a human.

The heart of giraffe is two feet long, and can weigh as much as twenty four pounds.

On average, elephants sleep for about 2 hours per day.

Lobsters have blue blood.

Shark's teeth are literally as hard as steel.

A mosquito has 47 teeth.

Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.

Seventy percent of the dust in your home consists of shed human skin.

Fish are the only vertebrates that outnumber birds.

A cockroach can live for several weeks without its head.

The average human produces a quart of saliva a day -- about 10,000 gallons in a lifetime.

Elephants have been known to remain standing after they die.

The embryos of tiger sharks fight each other while in their mother's womb, the survivor being the baby shark that is born.

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Book : the career & legend of vasco de gama
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