Weird facts about well-known animals

(Source: msn)

It’s mind-blowing to think about the multitude of animals that exist in this world. From the tiny flea to the great blue whale, each animal possesses a unique quality that makes it stand out from the rest. Even if you’re a zoology expert, you might be surprised by some of these some Interesting facts about animals.
 

A blue whale’s tongue is massive and can weigh as much as 8,000 lbs (3,600 kg).
 

All oysters are born male but most change their gender to female after about a year and can switch back at will. An oyster is therefore able to produce both eggs and sperms.
 

Considered to be the loudest land animals, howler monkeys create loud, guttural sounds to defend their turf, that can travel up to 3 miles (4.8 km).
 
A cheetah can accelerate from 0 to 60 mph (95 km/h) in just 3 seconds. That’s faster than a Ferrari Enzo.
 
When a honey bee sucks up nectar from a flower though its proboscis, some of it goes into the main stomach to be used as food for energy. The remaining goes into a special stomach to be processed into honey.
 
Due to their immense size, elephants produce a lot of body heat. Thankfully, much of it radiates out through veins in their large floppy ears. An elephant can lose as much as 48 degrees Fahrenheit (9 degrees Celsius) through its massive ears.
 
Don't go by their cute appearances – poison dart frogs are some of the deadliest animals on earth. A single poison dart frog possesses enough venom to kill 10 adult men. Sometimes, animals die simply by touching a spot where a dart frog had just been.
 
The smallest bird in the world, the hummingbird is immensely fast and swift and can fly backward, upside down and even sideways. However, their legs are too weak and tiny to support walking. The most they can manage is to shuffle sideways.
 

Ostriches live in large groups and the males produce a deep grunt, commonly mistaken as a "roar," as a warning call to defend their territory. This behavioral sound comes naturally to them.
 

Like most insects, dragonflies have six legs but still can't walk. These winged creatures use their legs for grabbing and perching, but they don't support walking.
 
This is their way of coping with three months of constant summer sunlight followed by another three months of winter darkness. During summers, reindeer eyes reflect most of the light through the retina and thus appear golden in color. In winters, enhanced night vision kicks in and a layer of tissue appears behind the retina making it look blue.
 
Butterflies do not have a mouth or taste buds to taste food. Sensors located at the back of their legs help them identify whether what they're stepping on is palatable.
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