1. For every 1000 red blood cells in our body, there is only about one white cell.
2. An average adult human has skin weighing about 3 kilograms in total.
3. While we're awake, our brain generates enough power to illuminate a light bulb of 25 watts.
4. While hibernating, frogs breathe through their skin.
5. The world's smallest rodent is Pygmy Jerboa - measuring only a couple of inches in length - and can run as fast as a horse.
6. Whales were once land mammals that moved to the sea and adapted to marine life.
7. An alligator may go through 2000 to 3000 teeth in a lifetime.
8. An Octopus has three hearts.
9. The human heart has enough pressure to squirt blood up to 30 feet away.
10. The tongue of a blue whale is bigger than a taxi cab, and can weigh as much as an elephant.
11. The liver is the only organ able to regenerate itself completely.
12. The shark has to keep moving to stay alive.
13. In seahorses, it's the male who gives birth to the young.
14. A goldfish (like most marine fish) can survive in a tank full of human blood.
15. A fish never closes its eyes.
16. Only female mosquitoes bite people.
17. Elephants can hear through their feet.
18. The adult heart pumps about 7,500 litres of blood every day.
19. There are more bacteria and microbes in our body than actual cells that make up the body.
20. An ostrich's eye is bigger than its brain.
21. The giraffe is one of the quietest animals: it has no vocal chords to make any noise.
22. Human thigh bones are stronger than concrete.
23. Elephants are the only land animal that can't jump.
24. A teaspoonful of soil may contain 100 million bacteria.
25. The human brain is 75% water.
26. A lobster has a sense of smell about 1000 times keener than a human.
27. Frogs eat their skin after they shed it.
28. Porcupines float in water.
29. Ants do not sleep.
30. Elephants have... [continues]
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