Most sharks breathe by "ram ventilation," which means they have to keep swimming in order to breathe. Because of this need for constant movement, many sharks never sleep and just have resting periods.
Which Shark are you? Take this quiz and find out!!!
See if you are a dog or a cat!
With all the weird stuff on this planet, sometimes it's hard to tell what is what. Can you tell the difference between a plant and animal?
This awesome quiz will tell you exactly what type of dinosaur you would be!
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