Nicole Kidman is scared of butterflies.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Alligators can live up to 100 years.
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