Dogs have been man's pet for over 14,000 years.
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Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
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Dogs sometimes fake being sick to get attention.
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A man is more likely to get a woman's phone number if he is accompanied by a dog.
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The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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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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