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Cão de Gado Transmontano
Working breed from Trás-os-Montes region, Portugal
Breed overview
Reviewed · Database recordAbout the Cão de Gado Transmontano
The Cão de Gado Transmontano is a giant, powerful molossoid-type livestock guardian dog from the remote Trás-os-Montes region of northern Portugal. It has a thick double coat and is known for being protective, independent, calm, loyal, confident, and courageous. This breed was historically used by shepherds to guard flocks against wolves and other predators in harsh mountain conditions. It is not suited for apartment living and requires ample space. Estimated adult weight ranges from 50 to 75 kg for both sexes, with height estimated at 75 to 84 cm. Lifespan is estimated at 10 to 12 years. The breed's recognition status varies by registry.
Quick facts
Cão de Gado Transmontano at a glance
Sizegiant
Breed groupWorking
OriginTrás-os-Montes region, Portugal
Lifespan10–12 years
Male weight50–75 kilogram
Female weight50–75 kilogram
Male height75–84 centimetre
Female height75–84 centimetre
Origin and history
Where the breed comes from
The Cão de Gado Transmontano is an ancient Iberian mastiff-type breed developed in the remote Trás-os-Montes region of northern Portugal. For centuries, shepherds used these dogs to guard flocks against wolves and other predators in harsh mountain conditions. The breed's history is rooted in its working role as a livestock guardian, valued for its courage, loyalty, and ability to work independently. The exact timeline of its development is not precisely documented, but it is recognized by the FCI for these traits. The breed's isolation in the mountainous region contributed to its distinct characteristics.
Physical characteristics
Structured dataSize, build and coat
Female
50–75 kilogramAdult weight75–84 centimetreAdult heightCoat typesDoubleCoat colorsPendingRecognitionvaries by registryData methodai assisted draft
Temperament
Typical breed tendencies
Protectiveindependentcalmloyalconfidentcourageous
Breed tendencies are general guidance. Individual behavior depends on genetics, socialization, training, health and environment.
Exercise, training and maintenance
1–5 methodologyDaily care profile
Moderate compared with other breeds
Moderate compared with other breeds
Moderate compared with other breeds
Higher shedding tendency
Family suitability
Home and household fit
Supervise every dog–child interaction.
Introductions and socialization still matter.
Exercise, enrichment and noise tolerance affect fit.
Climate suitability
Modelled tendency · medium confidence
Modelled tendency · medium confidence
Modelled tendency · medium confidence
A general morphology-based tendency. Individual dogs still require shade, shelter, water, acclimation and weather-appropriate activity. Method: climate-morphology-v1.
Health overview
Veterinary sources requiredHealth considerations
No Cão de Gado Transmontano-specific screening programme or peer-reviewed disorder-prevalence study is currently attached to this profile. This is not evidence that the breed has no health risks. Owners should use routine preventive veterinary care and discuss screening appropriate to the individual dog's history, examination and family line.
Veterinary disclaimer: This profile is educational and does not replace examination, diagnosis or treatment by a veterinarian.
Feeding overview
Nutrition and feeding
Research in progress
Reviewed feeding guidance will appear after an approved source is imported and editorially reviewed.
Decision support
Potential advantages and challenges
Potential advantages
- Can be a strong family match when socialized and supervised.Supported by childSuitability: 4
- Commonly described as loyal.Supported by temperaments.loyal: true
Potential challenges
- Higher shedding can require frequent coat and home maintenance.Supported by sheddingScore: 4
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Growth chart
Cão de Gado Transmontano puppy growth
Modeled estimates
Open interactive chart From puppy weight to adult size
Compare male and female growth, check weight by age and estimate mature size.
Adult male weight50–75 kilogramAdult female weight50–75 kilogramGrowth modeladult-range-size-model-v1
Preview only. Open the complete chart to adjust age, current weight and measurement units.
Frequently asked questions
Common questions
What is the size and lifespan of a Cão de Gado Transmontano?
This is a giant breed. Estimated adult height is 75 to 84 cm for both sexes, and estimated adult weight is 50 to 75 kg for both sexes. Estimated lifespan is 10 to 12 years. These are modelled estimates, not exact figures.
What is the temperament of this breed?
The breed is described as protective, independent, calm, loyal, confident, and courageous. Individual dogs may vary, and these traits are general tendencies, not guarantees for every dog.
How much exercise does a Cão de Gado Transmontano need?
The breed has a moderate energy level (energy score 3 out of 5). It likely needs regular exercise, but specific requirements are not detailed in the available facts.
What are the grooming needs?
The breed has a double coat and a moderate grooming score (3 out of 5). Shedding is high (score 4 out of 5). Regular brushing is likely needed, but specific grooming routines are not provided.
Is this breed suitable for families with children or other dogs?
Child suitability is rated 4 out of 5, suggesting it can be good with children, but supervision and proper socialization are important. Dog compatibility is rated 3 out of 5, indicating it may be selective with other dogs. Individual temperament varies.
Can a Cão de Gado Transmontano live in an apartment?
No, apartment suitability is rated 1 out of 5. This breed is not suited for apartment living due to its large size and likely need for space.
Where does this breed originate from?
The breed originates from the Trás-os-Montes region of Portugal. It was developed as a livestock guardian dog in that mountainous area.
Data transparency
✓ Published · VerifiedSources and review status
APIThe Dog API ↗The Dog API Terms of Service (effective 2023-07-01)
VETERINARY SOURCEWSAVA Global Nutrition Guidelines and Toolkit ↗Copyright; factual citation and original summary only
Image source: The Dog API. Last reviewed 7/20/2026.