Bullmastiff
VS
King Charles Spaniel
Bullmastiff vs King Charles Spaniel
Compare Bullmastiff and King Charles Spaniel 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
King Charles Spaniel
Breed type
Purebred
Purebred
Height
61 – 69 cm
29 – 30 cm
Weight
41 – 59 kg
3 – 9 kg
Life expectancy
8 – 10 years
10 – 14 years
Child friendly
5/5
4/5
Energy level
3/5
3/5
Intelligence
3/5
3/5
Trainability
2/5
3/5
Health
3/5
3/5
Grooming needs
2/5
3/5
Shedding
3/5
3/5
Barking level
3/5
3/5
Aggressiveness
4/5
3/5
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Characteristics
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
King Charles Spaniel
Great with kids
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 King Charles Spaniel
Small, aristocratic toy spaniel with a domed head, short nose and large dark eyes, bred as a devoted lap companion. Calm indoors with moderate exercise needs, it thrives on constant human contact. Long, silky coat needs regular grooming; prone to heart, eye and brachycephalic‑related issues.
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