Dogs have been man's pet for over 14,000 years.
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Cats recognise the voice of their owner, but never evolved to care.
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The colossal squid has the largest eyes in the world.
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A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
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Dogs sometimes fake being sick to get attention.
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