Bullmastiff
VS
Cairn Terrier
Bullmastiff vs Cairn Terrier
Compare Bullmastiff and Cairn Terrier 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
Bullmastiff
Cairn Terrier
Breed type
Purebred
Purebred
Height
61 – 69 cm
28 – 31 cm
Weight
41 – 59 kg
7 – 8 kg
Life expectancy
8 – 10 years
12 – 17 years
Child friendly
5/5
5/5
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
1/5
Barking level
3/5
4/5
Aggressiveness
4/5
2/5
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Characteristics
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Cairn Terrier
Great with kids
Easy to train
Small
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 Cairn Terrier
Small, sturdy Scottish terrier bred to hunt among rocky cairns. Around 28–31 cm tall with a harsh, weatherproof double coat needing regular stripping and brushing. Bold, curious, affectionate, and vocal; enjoys daily walks, mental stimulation, and active family life. Generally hardy and long-lived.
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