Worlds largest dog….. The worlds heaviest as well as longest dog ever recorded was an Old English Mastiff named Zorba. In 1989, Zorba weighed 343 lbs and was 8 feet 3 inches long from nose to tail! 
World’s Tallest Living Dog 2004 Gibson
42.2 inches tall at shoulders
7 feet tall on his hind legs
170 Pounds
Green Valley California
For more info on Gibson click here.
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