What Is The Heaviest Dog Breed?

English Mastiff

You’ve seen large dogs in your neighborhood many times, but have you ever wondered what is the heaviest dog breed in the world?

According to the American Kennel Club (AKC), the English Mastiff is the largest dog breed.

Mastiff’s can weigh anywhere between 110 to 300+ pounds.

The heaviest English Mastiff broke the record for the heaviest and tallest dog in 1989. Zorba weighed an incredible 343 pounds! That’s about the size of a small pony.

~ Fun Fact ~
Rin Tin Tin is arguably the most famous canine in history. This loveable German Shepherd was found in WW1 and became an instant movie star.


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