1. Italian Greyhound
   Schipperke
2. Chihuahua
   Japanese Chin

The Chihuahua shares its name with the state in Mexico where it originated. It currently holds the record for being the smallest breed of dog in the world, with average weights of just four to six pounds.

1. Boxer
   English Foxhound
2. Collie
   American Eskimo Dog

The boxer is a breed of German dog that has a medium sized stature and powerful, athletic build. Their energetic nature and strength have led them to be used as guard dogs over the years.

1. Basenji
   Australian Shepherd
2. Cesky Terrier
   Yorkshire Terrier

The Yorkshire Terrier is a small breed of dog that originated in Yorkshire. Nowadays, it is an extremely popular choice when it comes to companion dogs, and several other breeds have been developed from it.

1. Dalmatian
   Pointer
2. Basset Hound
   Black Russian Terrier

The Basset Hound is a breed of relatively small dog that is distinguished by its elongated body and its incredibly short legs. This breed has a keen sense of smell and was initially bred for hunting.

1. Beagle
   Newfoundland
2. Chow chow
   Affenpinscher

The beagle is a breed of relatively small dog that is distinguished by its lithe and athletic stature, as well as its keen sense of smell. While it was originally used for hunting purposes, today it is also a popular household pet due to its good temperament and small size.

1. Norfolk Terrier
   Doberman Pinscher
2. Tibetan Mastiff
   Pembroke Welsh Corgi

The Doberman Pinscher is a powerfully built breed of dog that was developed in the late 1800s in Germany. This breed's strength and imposing stature as led to it being used as a guard dog. It has also served in law enforcement and military forces.

1. Cane Corso
   Bluetick Coonhound
2. Leonberger
   St. Bernard

The St. Bernard is a massive dog that was originally used as a rescue dog in and around the Alps. The breed gets its name from where it was first developed, the hospice that lies in the Great St. Bernard Pass.

1. Lagotti Romagnoli
   Golden Retriever
2. Shih Tzu
   Finnish Spitz

The Golden Retriever is a large breed of dog that originated in Scotland sometime around the mid-19th century. This breed is notable for its love of water, inherently friendly nature and the fact that they are easy to train.

1. Maltese
   Dachshunds
2. English Toy Spaniel
   Swedish Vallhund

The Maltese (also known as the Sleeve Dog) is breed of small dog that is classified in the toy group. The name of this breed is a direct reference to Malta, an island nation in the Mediterranean Sea.

1. Shetland Sheepdog
   Borzoi
2. Norwegian Elkhound
   Shiba Inu

The Shiba Inu is a breed of Japanese dog that was initially used for hunting, but it has since then become a popular household pet. In recent years, the dog has become somewhat of an internet sensation with its appearance in the "Doge" internet meme.

1. Bloodhound
   Lowchen
2. Siberian Husky
   Bearded Collie

The Siberian Husky is notable for its ability to function in extremely cold environments, as well as its hardy nature. The breed gets its name from its place of origin, the immensely cold Northeastern region of Asia, known as Siberia.

1. Labrador Retriever
   Boerboel
2. Icelandic Sheepdog
   Cocker Spaniel

The American Cocker Spaniel is a medium-sized dog that is distinguished by its thick and silky coat. As its name would suggest, it is closely related to the English Cocker Spaniel that originated on the other side of the Atlantic.

1. Rhodesian Ridgeback
   Skye Terrier
2. Tibetan Spaniel
   Mastiffs

The Rhodesian Ridgeback is a breed of dog that originated in Southern Africa. The breed's nickname, "African Lion Dog," was not given to it because of its appearance; it was given because it proved useful in keeping lions away from areas that it guarded.

1. Afghan Hound
   German Shepherd
2. Alaskan Malamute
   Pekingese

The German Shepherd is a breed of large working dog that originated in Germany in the late-1800s/early-1900s. The German Shepherd is notable for being one of the most iconic working dogs in the world. It's used for tasks that range from disability assistance to search-and-rescue.

1. Miniature Schnauzer
   Spinoni Italiani
2. Pharaoh Hound
   Bernese Mountain Dog

The Bernese Mountain Dog is a breed of large dog that can trace its origin back to Switzerland, specifically the Swiss Alps. It is a hardy working dog that would usually be seen performing farm-related tasks, like herding or pulling carts.

1. Weimaraner
   Pyrenean Shepherd
2. Silky Terrier
   Great Dane

Hailing from Germany, the Great Dane is a breed of working dog primarily known for its massive size. Notable Great Danes are the fictional dog Scooby-Doo and the tallest dog in the world, Zeus.

1. Otterhound
   French Bulldog
2. American Coonhound
   Lowchen

The French Bulldog is a small dog that originated in France in the 1800s. While they have become a popular breed in recent years, they are also notable for being plagued with a wide array of health issues.

1. Havanese
   Lhasa Apso
2. Neapolitan Mastiffs
   Rottweiler

The Havanese is a small companion dog that originated in Cuba and it is often used as a therapy dog. It is named after the capital city of Cuba and it is also the national dog of the country.

1. Poodle
   Tosa
2. German Shorthaired Pointer
   Boxer

The German Shorthaired Pointer is a breed of large sporting dog that originated in Germany sometime in the 1800s (or possibly even earlier). They are extremely intelligent and are still used for hunting purposes to this day.

1. Pomeranian
   Wirehaired Vizsla
2. Spanish Water Dog
   Boston Terrier

The Pomeranian is a small dog that formally belongs to the Spitz group. It is a popular companion dog, with the most notable Pomeranian owner being Queen Victoria.

1. Boston Terrier
   German Pinscher
2. Spanish Water Dog
   Pomeranian

The Boston Terrier is a small dog that originated in the United States in the latter half of the 1800s. It's one of the most popular breeds in America and has an expected lifespan of about 12 years.

1. German Shorthaired Pointer
   Scottish Deerhounds
2. Lhasa Apso
   Poodle

The Poodle is widely considered by many organizations to be the second-most intelligent dog breed in the world. However, they are primarily used as show dogs and companion dogs in most parts of the world.

1. Havanese
   Neapolitan Mastiff
2. Otterhound
   Rottweiler

The Rottweiler is a large dog known for its strength and intelligence. While it has a reputation for being excessively violent in popular culture, most Rottweilers are peaceful creatures. Violence in any dog is usually due to a lack of proper training and abuse.

1. Belgian Malinois
   American English Coonhound
2. Pyrenean Shepherd
   French Bulldog

The Belgian Malinois (often referred to as the Malinois) is a breed of large working dog that originated in Belgium. Today, they are perhaps most notable for being used extensively by the U.S. Secret Service.

1. Silky Terrier
   Weimaraner
2. Great Dane
   Chinese Crested Dog

The Weimaraner is a large dog that is distinguished by its athletic build and stoic behavior. This breed was originally used when hunting both large (bear, deer, etc.) and small (rabbit, fowl, etc.) game.

1. Pharaoh Hound
   Bernese Mountain Dog
2. Miniature Schnauzer
   Afghan Hound

The Miniature Schnauzer is a German breed that was developed during the latter half of the 19th century. It is without a doubt the most popular Schnauzer in the world and was originally intended for ratting.

1. Pekingese
   German Shepherd
2. Skye Terrier
   Alaskan Malamute

The Alaskan Malamute is a large dog that is notable for its ability to thrive in incredibly cold environments. It was intentionally bred to be strong and cold- resistant, since their original purpose was to haul heavy loads in snowy weather.

1. Rhodesian Ridgeback
   Tibetan Spaniel
2. Boerboel
   English Mastiff

The English Mastiff is a breed of massive dog that is primarily popular because of its size and gentle nature. As the name suggests, the breed originated in England and was commonly used as a working dog or guarding dog.

1. Icelandic Sheepdog
   Cocker Spaniel
2. Labrador Retriever
   Lowchen

The Labrador Retriever is notable for being one of the most popular breeds of dog in the western world and it can sometimes be seen helping law enforcement and people with disabilities. Its name is a direct reference to the geographical region of Labrador in Northeastern Canada.

1. Bearded Collie
   Bloodhound
2. Siberian Husky
   Borzoi

The Bloodhound is a breed of large dog that is distinguished by its wrinkled appearance and its powerful sense of smell. Not only was this breed used for tracking animals, but it was also capable of effectively tracking humans as well.

1. Shetland Sheepdog
   Norwegian Elkhound
2. English Toy Spaniel
   Shiba Inu

The Shetland Sheepdog is a moderately-sized dog that is notable for its high level of intelligence and endurance. Its name is a direct reference to its place of origin, the Shetland Islands in Scotland.

1. Dachshund
   Swedish Vallhund
2. Finnish Spitz
   Maltese

The Dachshund was originally used as a scent-hound. It is perhaps most notable for its short legs and elongated body, which have earned it the nickname "sausage dog."

1. Golden Retriever
   Lagotti Romagnoli
2. Bluetick Coonhound
   Shih Tzu

The Shih Tzu is originated in China and was bred to be a companion dog. Others names that it is known by are the "Chinese Lion Dog" and the "Chrysanthemum Dog".

1. Pembroke Welsh Corgi
   Leonberger
2. Tibetan Mastiff
   St. Bernard

The Pembroke Welsh Corgi is a breed of small dog that originated in Wales (specifically in the county of Pembrokeshire). It was originally intended to be a herding dog but has since become popular as a companion dog as well.

1. Norfolk Terrier
   Doberman Pinscher
2. Cane Corso
   Chow chow

The Cane Corso is a massive dog that originated in Italy and is known for its strength and hardiness. It is also known as the Italian Mastiff and it is often used as a guard dog because of its stature.

1. Affenpinscher
   Newfoundland
2. Beagle
   Black Russian Terrier

The Newfoundland is a massive dog that originated in Canada and was used extensively as a working dog because of its size and intelligence. This breed of dog is named after its specific place of origin, the provinces of Newfoundland and Labrador.

1. Dalmatian
   Basenji
2. Cesky Terrier
   Basset Hound

The Dalmatian is a breed of working dog that is known for its distinctive spotted coat. It has become closely liked to firefighting throughout history and is even nicknamed the "firehouse dog."

1. Australian Shepherd
   American Eskimo Dog
2. English Foxhound
   Yorkshire Terrier

The Australian Shepherd is a breed of medium-sized working dog that was primarily used as a herding dog on ranches. While this breed is known as the Australian Shepherd, it actually originated in the United States.

1. Boxer
   Japanese Chin
2. Schipperke
   Border Collie

The Border Collie is a large working dog that was originality intended to be used as a herding dog for sheep and other livestock. It holds the distinction of being regarded as the most intelligent dog breed in the world.

1. Bohemian Shepherd
   Chihuahua
2. Italian Greyhound
   Farm Collie

The Italian Greyhound is a relatively small dog that is distinguished by its incredibly slender body and narrow face. They are popular as companion dogs because of their energetic nature and natural friendliness.