Bullmastiff
VS
Jack Russell Terrier
Bullmastiff vs Jack Russell Terrier
Compare Bullmastiff and Jack Russell 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
Jack Russell Terrier
Breed type
Purebred
Purebred
Height
61 – 69 cm
25 – 30 cm
Weight
41 – 59 kg
5 – 6 kg
Life expectancy
8 – 10 years
13 – 16 years
Child friendly
5/5
5/5
Energy level
3/5
5/5
Intelligence
3/5
5/5
Trainability
2/5
5/5
Health
3/5
4/5
Grooming needs
2/5
2/5
Shedding
3/5
3/5
Barking level
3/5
5/5
Aggressiveness
4/5
3/5
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Characteristics
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Jack Russell Terrier
Great with kids
High energy
Super smart
Low grooming
Easy to train
Tiny
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 Jack Russell Terrier
Jack Russell Terrier: small, sturdy, energetic fox-hunting terrier with bold, intelligent nature. Needs 1–2 hours of daily exercise plus mental work. Predominantly white, three coat types, strong digging and prey drive. Affectionate with family but demanding and unsuited to very sedentary homes.
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