Condoms were originally made of animal intestines or linen.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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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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Penguins have a gland above their eye that turns saltwater into freshwater.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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When cats are happy, they may squeeze their eyes shut.
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