Mastiff
VS
Icelandic Sheepdog
Mastiff vs Icelandic Sheepdog
Compare Mastiff and Icelandic Sheepdog 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
Icelandic Sheepdog
Breed type
Purebred
Purebred
Height
70 – 91 cm
41 – 46 cm
Weight
75 – 110 kg
10 – 14 kg
Life expectancy
10 – 12 years
13 – 17 years
Child friendly
3/5
3/5
Energy level
3/5
4/5
Intelligence
4/5
3/5
Trainability
3/5
4/5
Health
2/5
4/5
Grooming needs
3/5
3/5
Shedding
3/5
3/5
Barking level
3/5
4/5
Aggressiveness
2/5
2/5
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Characteristics
Mastiff
Super smart
Giant
Icelandic Sheepdog
High energy
Easy to train
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 Icelandic Sheepdog
The Icelandic Sheepdog is Iceland’s only native spitz‑type herder, medium‑small, sturdy, and agile with a curled tail and thick double coat in varied colors. Cheerful, social, and vocal, it thrives on daily exercise, close family involvement, gentle training, and regular grooming.
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