The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The head of a jellyfish is called the "Bell."
6
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
Cats sleep for 70% of their lives.
8
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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