Sharks

Here are 5 amazing facts about sharks:

1. A whale shark's mouth is almost as wide as a car. 
2. The great white shark has the largest teeth of all living shark.
3. Some sharks can smell blood about half a mile away.
4. A spiny dogfish can live more than 100 years old.
5. You are more likely to win American Idol than to be killed by a shark.

Whale shark:

Great white shark:

[Source: National Geographic]