A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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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 sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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