Mastiff
VS
King Charles Spaniel
Mastiff vs King Charles Spaniel
Compare Mastiff 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
Mastiff
King Charles Spaniel
Breed type
Purebred
Purebred
Height
70 – 91 cm
29 – 30 cm
Weight
75 – 110 kg
3 – 9 kg
Life expectancy
10 – 12 years
10 – 14 years
Child friendly
3/5
4/5
Energy level
3/5
3/5
Intelligence
4/5
3/5
Trainability
3/5
3/5
Health
2/5
3/5
Grooming needs
3/5
3/5
Shedding
3/5
3/5
Barking level
3/5
3/5
Aggressiveness
2/5
3/5
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Characteristics
Mastiff
Super smart
Giant
King Charles Spaniel
Great with kids
Small
Summary
About Mastiff
The Mastiff is a giant, heavily built guardian dog, calm and dignified yet deeply devoted to its family. It is watchful rather than aggressive, needs gentle, consistent training, moderate exercise, and space. Its short coat is easy to maintain, but drool, health care, and costs are significant.
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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