Cats recognise the voice of their owner, but never evolved to care.
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The largest earthworm on record was found in South Africa and measured 22 feet.
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A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
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The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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