# 6 St. Bernard
The St. Bernard or St Bernard is a type of huge working dog breed from Swiss Alps and north Italy, initially reproduced for rescue operations. The breed has got famous by stories of rescues in alpine, and its huge size
# 5 Great Dane
Do you remember Scooby-Doo? Ah, we all do! You guessed it right, Scooby is a Great Dane. But not all are as talkative as Scooby; most of the Danes prefer not to speak.They are large German breed of domestic dog known for its huge sized body and great height. The German name of the breed is Deutsche Dogge, which means German mastiff. 
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# 4 Newfoundland
The Newfoundland is a huge working dog. Newfoundlands can be brown, black, white and gray or black. But, in Canada, where their oringin, they are in black and white and black only.
# 3 English Mastiff
I need not say anything about the dog, the picture says all. Everything about this dog is just huge! The massive head, stout legs and the thick bull neck are just insanely huge.
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# 2 Leonberger
A dog with beautiful golden fur indeed. So is it a lion breed? No. It was bred to symbolically mimic a lion. Interesting!
# 1 Tibetan Mastiff
As the name suggests, they are a breed originating from Tibetan region, which includes parts of Nepal, China and India. These scary looking dogs are actually used for various jobs by the locals.
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