Spanish Mastiff
VS
Portuguese Water Dog
Spanish Mastiff vs Portuguese Water Dog
Compare Spanish Mastiff and Portuguese Water Dog 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
Spanish Mastiff
Portuguese Water Dog
Breed type
Purebred
Purebred
Height
72 – 85 cm
43 – 57 cm
Weight
70 – 120 kg
16 – 25 kg
Life expectancy
8 – 12 years
12 – 15 years
Child friendly
4/5
5/5
Energy level
3/5
5/5
Intelligence
3/5
4/5
Trainability
3/5
4/5
Health
4/5
3/5
Grooming needs
2/5
4/5
Shedding
3/5
1/5
Barking level
3/5
3/5
Aggressiveness
3/5
3/5
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Characteristics
Spanish Mastiff
Great with kids
Low grooming
Giant
Portuguese Water Dog
Great with kids
High energy
Super smart
Easy to train
Medium
Summary
About Spanish Mastiff
Large, powerful livestock guardian, calm and observant yet strongly protective. Quiet and laid back at home if well exercised, deeply loyal with family and usually reserved with strangers. Independent and thoughtful, it suits experienced owners with space, structure and early socialisation.
About Portuguese Water Dog
The Portuguese Water Dog is a sturdy, medium‑sized, low‑shedding water lover with a curly or wavy coat. Intelligent, people‑oriented and energetic, it needs regular grooming, daily training, and plenty of exercise and swimming, thriving as an active, closely involved family companion.
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