Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Cats recognise the voice of their owner, but never evolved to care.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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Sharks, like other fish, have their reproductive organs in their chests.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
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Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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