There is a stigma about certain dog breeds in America because of their dangerous or aggressive behavior. The American Temperament Test Society (ATTS) organization tests dog breeds to see how many dogs pass the temperament test and receive a passing score, which is above 80%.
American Pit Bull Terriers are the most discriminated breed in America. They were tested by ATTS, and 75% of them received a passing score. The American Staffordshire Terrier passed with 83%, making them more popular than many dog breeds that are considered to be less aggressive.

However, that is where their popularity ends because they are not one of the most popular dog breeds in America.
Here is a list of the least popular dog breeds in America along with their ATTS score:
- English Bulldog (79%)
- Boston Terrier (82%)
- Great Dane (87%)
- Alaskan Malamute (88%)
- American Pit Bull Terriers (75%)
- Saint Bernard (85%)
- Chow Chow (82%)
- Akita (83%)
- Shar Pei (83%)
- Mastiff (80%)
- Great Pyrenees (88%)
What is the least popular dog ever?
The least popular dog ever is the English Bulldog. Out of all the dog breeds that have been tested by the ATTS, only 79% of them passed the temperament test. This breed is known for their lazy and sluggish behavior, and they are often referred to as “bulldogs” because of their stout appearance.
They were bred in England to be the side-kick of butchers and settlers because they have a calm demeanor. When bull-baiting was unlawful, this breed had a negative stigma attached to them because of their physical appearance.

What is the rarest dog breed in the USA?
The rarest dog breed in America is the Alaskan Klee Kai. It is a small-sized spitz-type breed that was developed by Dr. Linda Spurlin and her family in Juneau, Alaska where they became known as the “mini husky”.
They were bred to be smaller than their Siberian Husky ancestors, but they have the same friendly temperament and high energy levels.
In conclusion, the American Pit Bull Terriers are the most discriminated dog breed in America because of their aggressive behavior. However, they are only the least popular dog breed because 75% of them passed a temperament test that was administered by a nationally recognized organization.
This list also highlights the fact that many people will judge a dog based on its appearance rather than its actual temperament. Many people will think that a dog’s breed makes it more aggressive than another, and this is why there is so much controversy around dog breeds.