All dogs that do not go through sufficient obedience training can turn aggressive. However, here is a list of breeds most susceptible to this kind of temperament.

1. Chihuahua


The Chihuahua is the smallest canine listed in the American Kennel Club registry. They usually weigh between four and six pounds and are either long or short-haired. Their miniature size should not be mistaken for natural docility. 

Chihuahuas are considered America’s oldest canine breed. They hail from the state of Chihuahua in Mexico. Europe got acquainted with this dog breed, thanks to the global expeditions of Christopher Columbus.

These dogs’ loyalty is usually given only to two main owners at most. They tend to be very protective and possessive of their humans. Sometimes Chihuahuas will bark at strangers approaching their owners.


Worse, these dogs can snip at people they are not familiar with. This is why they need obedience training from as early as their puppy days.

2. Dachshund

The AKC categorizes the Dachshund as a hound dog. Their weight can reach 32 pounds at most. The color of these dogs’ coat run the gamut and grows either short or long.

Dachshunds were originally hunters of badgers in their home country of Germany. Their history dates back to the 17th century. These dogs almost suffered extinction post World War I.

Now the Dachshund is one of America’s most favorite dog breeds. It is important to note that this canine breed is prone to “small dog syndrome”. This basically means they tend to manifest a larger-than-life attitude to make up for their lapdog size.

To make them friendlier and more sociable, Dachshunds should be exposed to humans and other dogs from an early age.

3. Chow Chow

This dog belongs to AKC’s non-sporting canine category. They are medium in size, weighing 70 pounds at most. Chow chows have thick and long coats that come in shades of red, blue, cinnamon, black, and cream.

There is no definitive take on Chow chow’s origins. Some claim these dogs hail from either Mongolia or China. They were originally employed as herding and hunting dogs.

Chow chows became widely known in the United States after President Calvin Coolidge paraded this dog during the early years of the 20th century. This dominant dog is not suited for first-time dog parents. That is unless professional obedience training is done.

4. Doberman Pinscher

Listed in the working dog category of the AKC, the Doberman Pinscher is a medium-sized canine, ranging between 70 and 90 pounds in weight. These dogs are blessed with a short and glossy coat – in either red, blue, black, or fawn shade.

Karl Louis Doberman of Germany is widely credited as the originator of this dog breed. He originally used the Doberman as a guard dog while doing his tax collection job. This historical footnote explains the Doberman’s susceptibility to aggression.

5. Dalmatian

The AKC lists the Dalmatian as a working dog. They weigh between 45 and 60 pounds. They have white coat sprinkled with either brown or black spots.

The earliest historical trace of Dalmatians was found in Egyptian tomb paintings. Their exact origin is not known. Back in the 18th century, Dalmatians were employed as carriage dogs, protecting cargo and passengers alike.

Dalmatians require sufficient obedience training.




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