Dogs have no sense of time.
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Dogs can see in color, but not as vividly as humans.
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Although dogs have some sweat glands in their feet, their principal way of losing heat when they are too hot is by panting.
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The average number of puppies in a litter is four to six.
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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 world's largest dog was a Great Dane named Zorba, who weighed 343 pounds.
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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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During the Middle Ages, Great Danes and Mastiffs were sometimes suited with armor and spiked collars to enter a battle or to defend supply caravans.
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Dogs evolved from an extinct wolf-like creature in Eurasia 40,000 years ago.
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The wetness of a dog's nose is essential for determining what direction a smell is coming from.
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The Labrador Retriever is the #1 favorite breed in the U.S., Canada, and the U.K.
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The most popular dog breed in the UK is the Labrador Retriever.
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The largest breed of dog is the Irish Wolfhound.
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Most dogs have 42 teeth.
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Dachshunds were originally bred to fight badgers.
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