Jack Russell Terrier
VS
Bullmastiff
Jack Russell Terrier vs Bullmastiff
Compare Jack Russell Terrier 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
Jack Russell Terrier
Bullmastiff
Breed type
Purebred
Purebred
Height
25 – 30 cm
61 – 69 cm
Weight
5 – 6 kg
41 – 59 kg
Life expectancy
13 – 16 years
8 – 10 years
Child friendly
5/5
5/5
Energy level
5/5
3/5
Intelligence
5/5
3/5
Trainability
5/5
2/5
Health
4/5
3/5
Grooming needs
2/5
2/5
Shedding
3/5
3/5
Barking level
5/5
3/5
Aggressiveness
3/5
4/5
Characteristics
Jack Russell Terrier
Great with kids
High energy
Super smart
Low grooming
Easy to train
Tiny
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Summary
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.
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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