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  3. Do sharks have bones?

“Sharks don't have bones. Their skeletons are made of cartilage, the same flexible material in human ears and noses, which makes them lighter and more flexible.”

Animal Facts

Reference: NOAA

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Exploding ant fact

There is an ant in Brazil that has a gland which causes the ant to explode like a bomb, spraying a sticky toxic
goo on everybody nearby. Now that's some hard core biology!

Another fact