Mosquitoes don't just bite you, they also pee on you.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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