The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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