A group of kittens is called a "kindle".
10
Early American humans hunted car-size armadillos and used their shells for houses.
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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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