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Brazilian Mastiff

Loved by 70% of pet parents

Powerful, loyal, and deeply protective, this breed forms a strong bond with family. Confident and alert, the Brazilian Mastiff thrives as a devoted guardian.

Breed Characteristics

Friendliness

Energy

Trainability

Playfulness

Adaptability

Average sizes and life expectancy of the breed.

HEIGHT

65–75 cm (male)

60–70 cm (female)

WEIGHT

50–82 kg (male)

41–73 kg (female)

LIFE EXPECTANCY

9–11 years

Brazilian Mastiff: Breed snapshot

Everything you need to know about this beloved breed at a glance

Key Breed Characteristics

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Carnivora

Family

Canidae

Genus

Canis

Species

Canis lupus familiaris

Diet

Omnivore

"A Brazilian Mastiff isn't just a pet — they're a loyal companion, a playful friend, and a loving family member all in one."

Temperament & personality

Understanding Brazilian Mastiff's temperament is key to knowing if they're the right match for your lifestyle.

Personality Overview

The Brazilian Mastiff is loyal and protective, often reserved with strangers but affectionate with family members. This breed can be wary, making it a natural guardian.

Key Personality Traits

Friendliness

Reserved with strangers, loyal to family

Intelligence

Learns quickly but can be independent

Energy Level

Moderate energy, needs regular exercise

Playfulness

Not especially playful with most people

Adaptability

Struggles with new environments and changes

Strengths

Excellent natural guard dog instincts
Strong loyalty to family members
High tolerance for heat and humidity
Confident and self-assured demeanor
Low grooming requirements for coat care

Challenges

Distrustful of strangers and visitors
Requires experienced, assertive handler
Strong territorial and protective drives
Prone to drooling and slobbering
Limited tolerance for other animals

Protect your Brazilian Mastiff

Brazilian Mastiff can develop hip dysplasia and gastric torsion. PetSecur covers unexpected vet costs with quick payouts and personal service.

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Intelligence & exercise needs

Brazilian Mastiffs are both highly intelligent and energetic, requiring mental and physical stimulation to thrive.

🧠 Intelligence & training

Trainability

Learns with consistency

Overall rating

The Brazilian Mastiff is intelligent but strong-willed, often displaying independent thinking. Consistent, experienced training and early socialization are essential for achieving reliable responsiveness.

Trainable Tasks:

Guarding property boundaries

Controlled leash walking

Socialization with strangers

Recall and response training

Perimeter patrol commands

Calm greeting behavior

🏃 Exercise & energy levels

Daily Exercise

60–90 minutes daily

recommended per day

The breed has moderate to high energy and requires daily walks and secure outdoor space. Mental stimulation and regular physical activity help prevent boredom and support overall well-being.

Recommended Activities:

Long leash walks

Supervised outdoor play

Scent tracking exercises

Structured obedience sessions

Agility course navigation

Swimming sessions

Is this breed right for you?

Brazilian Mastiffs are versatile dogs that adapt well to many lifestyles, but they're not the perfect match for everyone. Here's a quick guide to help you determine if a Brazilian Mastiff would fit well in your home.