Key Differences Between a German Shepherd and an American Bulldog

Quick Take

• One of these breeds nearly vanished from existence entirely, and what saved it shaped the dog you'd bring home today. See breed origins →
• Both breeds are intelligent, but only one of them will actually use that intelligence against you during training. Compare trainability traits →
• Their coats look completely different for a reason, and that reason has a direct impact on where you can safely take them. Explore coat differences →
• Choosing the wrong breed for your activity level doesn't just frustrate the dog. It can also trigger specific behavioral problems. Match breed to your lifestyle →

The German shepherd originated in Germany in 1899. The breed was developed to create the ultimate, standardized working herder by combining traits from various traditional regional herding dogs. As herding became less common, German shepherds transitioned to police and military work. Over time, they also became household pets, shifting the breed’s image from a fierce military asset to an affectionate family guardian.

American bulldogs descend from Old English bulldogs brought to North America from England in the 17th century. American bulldogs were originally utilized as farm dogs, bred to protect property and hunt wild boar. In the latter part of the 20th century, the American bulldog transitioned from a rural working farm dog to a popular family pet. After nearly going extinct following World War II, dedicated breeders worked to save and refine the breed, ultimately shaping the beloved family companions we know today. Continue reading to discover more about the key differences between a German shepherd and an American bulldog to help determine which breed fits your lifestyle.

German Shepherd Vs. American Bulldog

German shepherds are medium-to-large, muscular dogs with noticeable differences between males and females. Males typically stand 24 to 26 inches tall at the shoulder and weigh between 65 and 90 pounds. Females are slightly smaller, standing 22 to 24 inches tall and weighing between 50 and 70 pounds.

The average American bulldog is a large, powerfully built dog, with males standing 22 to 28 inches tall at the shoulder and weighing between 70 and 125 pounds. Females are slightly smaller, standing 20 to 26 inches in height and typically weighing between 60 and 100 pounds.

The German shepherd and American bulldog have vastly different coats tailored to their original roles.

The German shepherd has a dense, weather-resistant double coat consisting of a harsh outer layer and a thick undercoat that sheds heavily year-round. This coat provides excellent insulation against extreme temperatures but requires frequent brushing.

In contrast, the bulldog sports a sleek, single coat that is short and stiff. While the bulldog sheds much less and requires minimal grooming, its thin coat provides little protection against extreme temperatures.

Temperament

Both German shepherds and American bulldogs are loyal, affectionate, and intelligent. Both breeds make excellent family pets, with a protective nature that makes them great watchdogs. While they can be aloof or reserved around strangers, neither breed is aggressive without cause when properly socialized. German shepherds and American bulldogs have high energy levels and require regular physical activity and mental stimulation to prevent boredom and behavioral issues.

The German shepherd is highly trainable and eager to please. It learns commands quickly but requires a confident handler. Without clear leadership, its intelligence and protective instincts can lead to behavioral issues.

Without consistent boundaries, their protective nature can turn into overprotectiveness or outright aggression, causing them to bark or lunge at strangers and guard resources like food or toys. German shepherds also become bored without proper mental and physical stimulation, which can lead to destructive behaviors.

The American bulldog is more challenging to train due to its independence and strong will. While intelligent, it requires immense patience, positive reinforcement, and consistent boundaries to overcome its stubborn streak.

Because of their strong guardian instincts, American bulldogs require proper socialization and training to prevent aggression or defensive behavior toward strangers.

Health Factors

The average life expectancy of a German shepherd is between 9 and 13 years, while recent studies suggest the American bulldog typically lives around 8 years.

Due to their short snouts, American bulldogs can have difficulty breathing, are at an increased risk of heat stroke, and may experience other complications associated with brachycephalic airway syndrome. They’re also prone to luxating patella and heart problems.

German shepherds are prone to joint issues, degenerative myelopathy, and gastric dilatation-volvulus (GDV), also known as bloat.

Which Breed is Best for You?

Whether a German shepherd or an American bulldog is the best breed depends on your lifestyle.

While both breeds make excellent watchdogs and family protectors, they require training and socialization to curb their guardian tendencies.

Both German shepherds and American bulldogs are affectionate, but may suffer if left alone for too long. They fit best with families who can be with them most of the day.

If you want a dog to exercise with, a German shepherd is the best choice. If you prefer a more relaxed companion but are still willing to provide daily exercise, a bulldog may be a better fit.

In the end, both are great dogs, just different.