The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Dogs have been man's pet for over 14,000 years.
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
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Two dogs were among the Titanic survivors.
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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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