Here are some record breaking canines:

-The Greyhound is the Fastest Dog on Earth and can run 45 miles per hour for short periods of time

-The Irish Wolfhounds is the largest dog

-The Great Dane is the tallest dog

-The Chihuahua is the smallest dog

-The St. Bernard is the heaviest dog

-The Worlds oldest dog was an Australian cattle-dog named Bluey who lived to the age of 29 years and 5 months!

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