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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There's a lizard known as the 'Jesus Lizard' that can run across water.
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Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Sharks, like other fish, have their reproductive organs in their chests.
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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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The reindeer is the only mammal that can see UV light.
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