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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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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The Caspian Sea is also classed as the world's largest lake.
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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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An African Baobab tree in South Africa, known as Big Baobab, has a circumference of 154 feet and even has a bar inside the trunk that can fit 60 people.
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George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
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