Dogs have four toes on their hind feet, and five on their front feet.
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The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The Basenji dog is the only dog that is not able to bark.
4
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.
7
Dogs have been man's pet for over 14,000 years.
224
Two dogs were among the Titanic survivors.
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