Decoding Dog Temperament: From the Friendliest to the Unfriendliest Dog Breeds – A 5,000 Owner Analysis

What makes a dog friendly—or unfriendly? While genetics certainly plays a role, a dog’s early socialization and training are equally important in shaping its personality. Forbes Advisor surveyed 5,000 dog owners to uncover which breeds tend to be the most social and welcoming, and which ones, despite their charm, rank among the unfriendliest dog breeds. The study examined 25 of the most popular breeds according to the American Kennel Club, using specific behavioral metrics to create a comprehensive friendliness index.

Why Friendliness Matters When Choosing Your Canine Companion

Before diving into the rankings, it’s worth understanding what drives canine friendliness. Dogs that welcome strangers, enjoy physical affection, and play well with other pets tend to adapt better to family life, reduce training challenges, and create fewer behavioral issues. On the flip side, understanding the unfriendliest dog breeds and their temperament tendencies helps prospective owners make informed decisions that align with their lifestyle and experience level. The survey measured friendliness across 10 distinct behavioral metrics, each weighted equally at 10% of the total score, creating a balanced assessment of each breed’s social disposition.

The Unfriendliest Dog Breeds: What Research Reveals About Canine Temperament

The research identified several breeds that, while beloved by their dedicated owners, tend to score lower on friendliness scales. These unfriendliest dog breeds often display protective instincts, selectivity about strangers, and reserved attitudes toward unfamiliar people—traits that reflect their historical breeding purposes rather than any inherent meanness.

American Bulldog topped the unfriendliest list with a score of 0 out of 100. Interestingly, this breed ranks well for obedience, yet owners report they’re among the least likely to enjoy cuddling (16.3% don’t), show resistance to treats from others (56% decline), and display defensiveness toward newcomers (18%). The contradiction highlights that “friendliness” and “obedience” measure different traits.

Doberman Pinscher secured the second position with just 2.25 points. Bred as protective guardians, these elegant dogs live up to their purpose: 23.5% of owners report their Doberman doesn’t warm to strangers easily, and 60% are unlikely to accept treats from non-family members. They exhibit strong territorial instincts that prioritize loyalty over openness.

Rottweilers and Cane Corsos tied for third place, both scoring 8.43 out of 100. Though capable of being silly and playful with family, these commanding breeds are naturally skeptical of outsiders. Rottweilers are among the least likely to accept treats from strangers (20.5%), while Cane Corsos—whose name translates to “bodyguard dog”—have the lowest rate of owners describing their pets as “very friendly” or “somewhat friendly” (just 77%, compared to the study average of 87.1%).

Shih Tzus rounded out the bottom five with 8.99 points, making them the only small breed among the unfriendliest dog breeds in this analysis. Their lower score stems primarily from poor socialization with other dogs (only 49.5% play well with canine companions) rather than issues with humans.

Most Affectionate Breeds: The Opposite End of the Spectrum

In stark contrast, certain breeds consistently demonstrate enthusiasm for social interaction. Bernese Mountain Dogs dominate the friendly end, achieving a perfect 100-point score. These gentle giants rank first in multiple categories: only 6% are defensive toward newcomers, just 7.3% don’t enjoy cuddling, and a remarkable 80.5% play harmoniously with other dogs.

Golden Retrievers and Pembroke Welsh Corgis tie for second with 94.94 points each. Golden Retrievers live up to their reputation with 94% of owners rating them very or somewhat friendly, while 43.5% enthusiastically greet newcomers. Corgis, despite their small stature, are extremely treat-motivated (only 6.5% decline) and rank third among breeds whose owners rate them as friendly (93%).

Labrador Retrievers claim fourth place with 94.38 points, maintaining their legacy as America’s most popular breed for nearly a decade. Labs shine in cuddle metrics (75.8% enjoy it), treat acceptance (75.3% happily accept from others), and newcomer welcomes (47% greet warmly). Boxers, Great Danes, Cavalier King Charles Spaniels, Boston Terriers, French Bulldogs, and Australian Shepherds round out the top 10, each displaying varying strengths in different friendliness categories.

Behavioral Metrics Behind the Rankings: How Researchers Measured Dog Friendliness

The Forbes Advisor study employed a sophisticated 10-metric framework to ensure comprehensive evaluation:

• Frequency of positive play with other dogs (always/often vs. rarely/never)
• Enjoyment of cuddling and physical affection patterns
• Willingness to accept treats and pets from non-family members
• Responses to newcomers and strangers
• Owner perception of overall friendliness levels

Each metric accounted for 10% of the final score, preventing any single behavior from skewing results. This balanced approach revealed that friendliness isn’t monolithic—a breed could excel at cuddling but resist strangers, or vice versa. The Cavalier King Charles Spaniel exemplifies this nuance: they rank among the top five for cuddling but are less enthusiastic about treats from unfamiliar people.

Choosing the Right Breed for Your Lifestyle and Budget

Beyond temperament, prospective dog owners must consider healthcare costs. Several breeds from both the friendliest and unfriendliest categories appear on lists of most expensive dog breeds to insure. French Bulldogs (ranked #9 in friendliness) and both Rottweilers and Cane Corsos (among the unfriendliest) command higher premiums due to breed-specific health predispositions.

The average pet insurance for dogs costs approximately $612 annually (based on $5,000 annual coverage, $250 deductible, and 80% reimbursement), though policies vary significantly. Some breeds face steeper costs due to susceptibility to heart conditions, hip dysplasia, and other hereditary issues. The average veterinary visit runs about $61, but specialized treatments can multiply costs rapidly.

Comprehensive pet insurance typically covers accidents, injuries, behavioral therapy, chronic conditions, prescription medications, and wellness procedures. With the average monthly premium around $55 for unlimited annual coverage, many owners find the investment worthwhile. The key consideration: can you afford unexpected veterinary expenses without insurance?

Understanding Breed Behavior in Context

It’s crucial to remember that breed tendencies represent statistical patterns, not absolute predictions. A dog classified among the unfriendliest dog breeds can become remarkably friendly with proper early socialization, positive reinforcement training, and consistent social exposure. Environmental factors—a dog’s upbringing, training history, and individual personality—often matter as much as genetic predisposition. Similarly, individual dogs within friendly breeds may display atypical withdrawn or aggressive behaviors.

The survey data represents owner perceptions at a single point in time, influenced by their experiences and training approaches. A protective breed in an experienced handler’s home might behave very differently than the same breed with an inexperienced owner who hasn’t invested in socialization.

Final Thoughts

Whether you’re drawn to the universally welcoming Bernese Mountain Dog or respect the protective independence of a Doberman Pinscher, understanding breed-specific friendliness patterns empowers more informed adoption decisions. The research demonstrates that the unfriendliest dog breeds aren’t inherently problematic—they simply require owners who appreciate their distinct temperament. Combined with proper training, socialization, and appropriate pet insurance coverage, any dog can become a beloved family member suited to your lifestyle.