There are about 400 million dogs in the world.
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A German Shepherd named Orient accompanied her blind owner Bill Irwin as he became the first blind person to through-hike the 2,100-mile Appalachian Trail in 1990.
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While not the best when it comes to sight, dogs have a keen sense of hearing, and can hear sounds at 4 times the distance of humans.
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Countess Karlotta Libenstein of Germany left approximately $106 million to her Alsatin, Gunther III, when she died in 1992.
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Dogs DO have better low-light vision than humans because of a special light-reflecting layer behind their retinas.
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Most experts believe humans domesticated dogs before donkeys, horses, sheep, goats, cattle, cats, or chickens.
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Big happy "helicopter" tail wagging is one sign of a really nice dog
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Touch is the first sense the dog develops. The entire body, including the paws, is covered with touch-sensitive nerve endings.
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The shortest living dog was a Chihuahua named Milly, who measured only 3.8 inches tall.
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Dogs are naturally submissive to any creature with higher pack status, human or canine.
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A puppy is born blind, deaf, and toothless.
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The ancient Mbaya Indians of the Gran Chaco in South America believed that humans originally lived underground until dogs dug them up.
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The Labrador Retriever has been the most popular dog breed since 1991.
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Paul McCartney of the Beatles recorded a high pitched whistle at the end of "A Day in the Life" for his dog.
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Like human babies, Chihuahuas are born with a soft spot in their skull which closes with age.
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