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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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Tigers can see 6 times better at night than humans.
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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Dolphins have names for one another.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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