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.
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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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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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Jellyfish as a species are actually older than dinosaurs and sharks.
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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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