Animal curiosities

by Rubén Mota (Source: COLLAGE magazine # 3: 2011-2012: article)

In the world there are approximately 1,250,000 animal species and there are many more to discover. Now I’m going to tell you some curiosities about animals that we know:
A mosquito can smell the human blood from 50 km away.
Animals can’t sleep on their backs.
The spider web is the most resistant material created by nature.
A giraffe’s neck has the same number of vertebrae as a human’s.
Worms have 10 hearts.
When an ant dies inside a house, it emits an odor that attracts other ants to find and bury it.
Ants don’t sleep.
The smallest fish in the world measures 8 mm.
A hippo can run faster than a man.
The quack of a duck hasn’t got an echo.
The koala is the laziest animal. It sleeps 22 hours a day.
Sheep don’t drink water when the water is moving.
A cow can go up stairs but it can’t down them.
Mosquitoes prefer biting children and people who have blonde hair.
An ostrich’s eye is the same size as its brain.
A crocodile can’t stick its tongue out and it can run as fast as a horse.
Dolphins sleep with one eye open.
The blue whale is the biggest animal in the world. It can measure 30 meters and it can weigh 180 tons.