Have you ever crossed the street to avoid a certain breed of dog? We’ve all been there – certain breeds just seem to give off an aggressive vibe. But what if the dogs you were afraid of weren’t actually the aggressive ones?
A fascinating study from the University of Pennsylvania1 turned everything we thought we knew about aggressive dog breeds on its head. Despite the reputations of big, powerful breeds like Pit Bulls and Rottweilers, this study found them scoring average or even below average in aggression towards humans and other dogs. It seems our stereotypes about aggressive breeds may be all wrong.
Of course, certain breeds do have a historical reputation for aggression that can’t be completely ignored. These are some of the breeds most commonly perceived as the “most aggressive dog breeds”:
1. Chihuahuas
The tiny Chi has a big reputation for aggression that studies back up. Named by the University of Pennsylvania study as one of the most aggressive toy breeds, Chihuahuas make up for their diminutive size with abundant self-confidence and feistiness. Their aggressive behaviors likely arise from anxiety, territorial instincts, and poor socialization – ensuring positive experiences is key for these little pups.
2. Jack Russell Terriers
It’s not too surprising that Jack Russell Terriers ranked highly for aggression given their intense, high-energy natures. Originally bred for hunting vermin, this terrier breed maintains a bold, determined persona that can manifest as aggression if not managed properly.
3. Staffordshire Bull Terriers
Descending from the now-extinct Bull and Terrier breeds used in blood sports, Staffies were bred to have the strength and tenacity to pin bulls and bears. Their muscular builds contribute to their intimidating reputation.
4. Doberman Pinschers
Developed in Germany during the 19th century, Dobermans were created as guard dogs with maximum intimidation and combat capability in mind. Their sleek, muscular build and notorious cropped ears amplify their aggressive appearance.
5. German Shepherds
As the name implies, German Shepherds were originally herding dogs tasked with protecting flocks from predators. Their loyalty, strength and protective drive translate into potential aggression if not properly trained and socialized.
6. Akitas
This Japanese breed was used for tasks like guarding royalty and hunting large game like bear and deer. Akitas are extremely territorial and were conditioned to act aggressively if provoked.
7. Chow Chows
One of the most ancient dog breeds, Chows were bred in northern China to guard temples and pull sleds for hunters. Their distinctive scowling expression belies a stubborn, protective nature.
8. Siberian Huskies
Originally bred to pull sleds and work as companions to the Chukchi people in Siberia, Huskies have strong prey drives and moderate aggression due to their working roots in harsh environments.
9. Presa Canarios
Developed for working farms and ranches, the Presa Canario was bred to be an exceptional guard dog and capable of bringing down large prey like wild boars and cattle. Their imposing size and strength are meant to deter threats.
10. Cane Corsos
Originating in Italy, the Cane Corso was used for guarding, hunting large game, and working on farms and ranches. Their territorial and protective instincts were carefully developed through selective breeding.
Nature vs. Nurture in Aggressive Dog Breeds
Many of these breeds were originally bred for guarding, protection, or blood sports, which could contribute to potential aggressive tendencies. Their size and strength alone can also make them seem threatening, even if they aren’t actively hostile.
But as the research shows, reputation and stereotypes can be deceiving. Just because a dog breed has an aggressive reputation doesn’t necessarily mean every dog of that breed will be aggressive.
Conversely, the smallest, fluffiest pup could potentially lash out in an aggressive way given the wrong circumstances.
Source
- https://www.sciencedirect.com/science/article/abs/pii/S0168159108001147
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Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.