The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
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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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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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A group of unicorns is called a blessing.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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