Bullmastiff vs Australian Shepherd
Compare Bullmastiff and Australian Shepherd: size, life expectancy, temperament and care side by side.
Bullmastiff
VS
Australian Shepherd
Comparison table
Show differences only
Characteristic
Bullmastiff
Australian Shepherd
Breed type
Purebred
Purebred
Height
61 – 69 cm
46 – 58 cm
Weight
41 – 59 kg
14 – 29 kg
Life expectancy
8 – 10 years
13 – 16 years
Child friendly
5/5
3/5
Energy level
3/5
3/5
Intelligence
3/5
3/5
Trainability
2/5
4/5
Health
3/5
4/5
Grooming needs
2/5
4/5
Shedding
3/5
3/5
Barking level
3/5
4/5
Aggressiveness
4/5
3/5
The 1–5 scale shows the level of each trait. A higher value means more of that trait. Individual animals may vary.
Characteristics
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Australian Shepherd
Easy to train
Medium
Summary
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.
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.
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