What is the biggest dog and cat breed in the world?
The Biggest, Largest Dog – the Mastiff The biggest dog (and breed of dog) in terms of mass is the English Mastiff, with Zorba the OEM taking the crown. From the U.K., Zorba weighed in at 343 lbs and measured almost 8 feet long from nose to tail. English Mastiffs are considered the biggest dogs as they are usually the heaviest dogs with weights over 200 lbs. not uncommon. Giant Dog Reference: Irish Wolfhound: weight: 105-125 lbs. height: 35-35 in. Great Danes: weight: 100-120 lbs. height: 28-32 in. English Mastiff: weight: 175-190 lbs. height: 27.5-30 in. Neopolitan Mastiff: weight: 150-180 lbs. height: 26-31 in. Newfoundland: weight: 130-150 lbs. height 28-30 in. Saint Bernard: weight: 150-200 lbs. height: 27-30 in.