16.Komondor Also known as the Hungarian Sheep Dog, the Komondor is a very large, typically white-colored livestock guardian which is distinct not just For its size, but the strange nature of its coat.

15.Newfoundland dog Known for being a robust working breed, the Newfoundland dog is instantly recognizable not just for its size, but its full, long coat.

14.Caucasian shepherd dog Originally registered as having been bred in the USSR but native to Georgia and other parts of Caucasus, the Caucasian Shepherd Dog is well known for its size.

13.Scottish deerhound The Scottish deerhound is another very large breed of dog, originally bred to hunt Red Deer by a type of pursuit hunting known as coursing.

12.Neapolitan mastiff Another example of the massive mastiff family, the Neapolitan mastiff is revered for its absolutely colossal size. Males of the breed can easily reach 150+ pounds and a height of 30 inches or more, while females aren’t much smaller at anywhere from 24 – 29 inches and 130 pounds.

11.St. Bernard The St. Bernard is perhaps the most well known breed of large dog, due mainly to the celebrity status of certain individual St. Bernards. Most famously, the movie series starting with 1992’s Beethoven featured a lovable but unruly St. Bernard.

10.Alaskan Malamute Well revered for their beauty and intelligence, the Alaskan Malamute is a favorite by far among lovers of large dogs. In terms of functionality, the Malamute is well suited for things like sledding and pulling large loads, with an emphasis on serving as a draft animal due to its robust strength and the fact that it is not quite as fast as other sled dogs.

9.The Irish wolfhound Another very popular breed of large dog is the Irish Wolfhound. Given this name not for their appearance but rather for their original purpose, Irish Wolfhounds were bred specifically to hunt wolves.

8.Russian black terrier When most people think of terriers, they probably picture the tiny breeds like the Yorkshire or the Jack Russell, but it’s worth noting that dogs of the terrier name reached the complete opposite end of the size spectrum as well.

7.Leonberger Another large dog to come from Germany is the Leonberger, which was originally bred in the city of Leonberg, Germany, to serve as a symbol for the town. The city’s crest featured a lion, and the legend says the the Leonberger dog was developed to mimic the lion on the crest.

6.Tosa Inu Another version of the mastiff is the Tosa Inu, which originates from Japan. These dogs are considered to be a fairly rare breed, and as a result purebreds can fetch a high price. The dog was developed in Tosa, Japan, ostensibly for the purpose of fighting, and it is still used for that purpose today.

5.Bernese mountain dog One of four large and closely related dogs bred in the Swiss Alps, the Bernese mountain dog is regarded not just for its large size and usefulness herding livestock, but also for its beautiful and full mountain coat.

4.Boerboel Also known as the South African mastiff, the Boerboel is yet another example of the far reach of the mastiff family of dog breeds.

3.Anatolian shepherd As the name implies, the Anatolian shepherd dog originates in the Anatolia region of Turkey, where it was originally bred as a protector and herder of livestock.

2.Great Dane It’s nearly impossible to put together a list of the largest dog breeds without at least mentioning the Great Dane. Like the St. Bernard, the Great Dane is one of the most iconic large-stature dogs, coming in at up to 180 pounds and 30 inches tall.

1.English mastiff By far the most prevalent kind of mastiff is the English Mastiff. They are best known for their huge size – with males reaching sizes of 30 inches tall at minimum and weighing up to 250 pounds, and females coming in just a few inches shorter and 180 pounds on the higher end.