The heart of giraffe is two feet long, and can weigh as much as twenty four pounds.
Lobsters have blue blood.sciensational.com
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
A mosquito has 47 teeth.
Shark's teeth are literally as hard as steel.
Seventy percent of the dust in your home consists of shed human skin
Fish are the only vertebrates that outnumber birds.sciensational.com
A cockroach can live for several weeks without its head. Submitted by: Gads - New York, United States.
The average human produces about a litre of saliva a day -- about 37,854 litres in a lifetime
Elephants have been known to remain standing after they die.
Rats multiply so quickly that in 18 months, two rats could have over 1 million descendents.
Ants do not sleep.sciensational.com
Healthy nails grow about 2 cm each year. Fingernails grow four times as fast as toenails.
20/20 vision means the eye can see normally at 20 feet. 20/15 is better; the eye can see at 20 feet what another eye sees at 15 feet.
The ant can lift things 10 times its own weight.
The ears of a cricket are located on the front legs, just below the knee.
Women blink nearly twice as much as men.sciensational.com
The right lung takes in more air than the left.
If all major forms of cardiovascular disease were eliminated, human life expectancy would increase by 9.78 years.
Every four days the worlds population increases by one million people.