Mastiff
VS
Irish Terrier
Mastiff vs Irish Terrier
Compare Mastiff and Irish 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
Mastiff
Irish Terrier
Breed type
Purebred
Purebred
Height
70 – 91 cm
44 – 50 cm
Weight
75 – 110 kg
11 – 15 kg
Life expectancy
10 – 12 years
13 – 15 years
Child friendly
3/5
5/5
Energy level
3/5
4/5
Intelligence
4/5
4/5
Trainability
3/5
2/5
Health
2/5
4/5
Grooming needs
3/5
3/5
Shedding
3/5
1/5
Barking level
3/5
4/5
Aggressiveness
2/5
3/5
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Characteristics
Mastiff
Super smart
Giant
Irish Terrier
Great with kids
High energy
Super smart
Stubborn
Medium
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 Irish Terrier
Medium, athletic terrier with a wiry red coat, low shedding when properly groomed. Intelligent, energetic, and independent, needing daily exercise and mental stimulation. Deeply loyal and people‑oriented, a keen watchdog, with strong prey drive and sometimes challenging with other dogs.
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