The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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The cat brain weighs about 30g.
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Dogs sometimes fake being sick to get attention.
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The elephant brain weighs about 6,000g.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
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