Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
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Penguins have a gland above their eye that turns saltwater into freshwater.
12
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
A group of kittens is called a "kindle".
10