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
A group of unicorns is called a blessing.
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Bats sleep 18-20 hours per day.
5
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Cows can sleep standing up, but they can only dream lying down.
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