Mastiff
VS
Rat Terrier
Mastiff vs Rat Terrier
Compare Mastiff and Rat 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
Rat Terrier
Breed type
Purebred
Purebred
Height
70 – 91 cm
25 – 46 cm
Weight
75 – 110 kg
5 – 10 kg
Life expectancy
10 – 12 years
15 – 18 years
Child friendly
3/5
3/5
Energy level
3/5
3/5
Intelligence
4/5
3/5
Trainability
3/5
3/5
Health
2/5
4/5
Grooming needs
3/5
1/5
Shedding
3/5
3/5
Barking level
3/5
4/5
Aggressiveness
2/5
3/5
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Characteristics
Mastiff
Super smart
Giant
Rat Terrier
Low grooming
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 Rat Terrier
The Rat Terrier is an American‑bred, small to medium, athletic farm and vermin dog. Intelligent and energetic, it thrives on training, exercise, and close family contact. With a short, low‑maintenance coat in many pied colors, it suits active homes and excels in various dog sports.
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