Australian Shepherd
VS
Bullmastiff
Australian Shepherd vs Bullmastiff
Compare Australian Shepherd and Bullmastiff side by side and get a clear picture of what sets the breeds apart. Explore differences in size, weight, temperament, activity level, and other key traits to more easily decide which breed best fits your lifestyle and circumstances.
Characteristic
Australian Shepherd
Bullmastiff
Breed type
Purebred
Purebred
Height
46 – 58 cm
61 – 69 cm
Weight
14 – 29 kg
41 – 59 kg
Life expectancy
13 – 16 years
8 – 10 years
Child friendly
3/5
5/5
Energy level
3/5
3/5
Intelligence
3/5
3/5
Trainability
4/5
2/5
Health
4/5
3/5
Grooming needs
4/5
2/5
Shedding
3/5
3/5
Barking level
4/5
3/5
Aggressiveness
3/5
4/5
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Characteristics
Australian Shepherd
Easy to train
Medium
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Summary
About Australian Shepherd
The Australian Shepherd is a medium, athletic herding dog, highly intelligent and energetic. Loyal and people oriented, it bonds closely and needs substantial daily exercise, training, and mental work. Its striking, weather resistant coat and varied eye colors add to its appeal.
About Bullmastiff
Large, powerful guardian originally bred to catch poachers, the Bullmastiff is calm, confident and deeply loyal, often bonding closely with one person. It has a short, low‑maintenance coat, needs space, consistent early training and socialisation to guide its natural protectiveness.
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