
Working breed from Uruguay
The Cimarrón Uruguayo is a large, powerful molossoid breed with a robust bone structure and athletic build. It has a short coat that comes in brindle or fawn. Known for its balanced temperament, this breed is described as courageous, intelligent, loyal, protective, calm, and confident. It is categorized in the Working group and originates from Uruguay. Recognition status varies by registry. Estimated adult weight ranges from 38 to 45 kg for both males and females, and estimated adult height ranges from 58 to 61 cm for both sexes. The estimated lifespan is 10 to 12 years.
The Cimarrón Uruguayo descends from dogs brought by Spanish and Portuguese colonizers. It developed as a feral breed and was shaped by natural selection in the wild. The breed was used for herding cattle, guarding property, and hunting large game. It was officially recognized in Uruguay in 1989 and is recognized by the FCI. However, the exact timeline and details of its early development are not fully documented, and some historical claims may be uncertain.
Breed tendencies are general guidance. Individual behavior depends on genetics, socialization, training, health and environment.
Higher daily exercise demand
Typically responsive to training
Lower coat-maintenance demand
Moderate compared with other breeds
Supervise every dog–child interaction.
Introductions and socialization still matter.
Exercise, enrichment and noise tolerance affect fit.
Modelled tendency · low confidence
Modelled tendency · low confidence
Modelled tendency · low confidence
A general morphology-based tendency. Individual dogs still require shade, shelter, water, acclimation and weather-appropriate activity. Method: climate-morphology-v1.
No Cimarrón Uruguayo-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.
Reviewed feeding guidance will appear after an approved source is imported and editorially reviewed.
Compare male and female growth, check weight by age and estimate mature size.
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The Cimarrón Uruguayo is a large breed. Estimated adult weight is 38–45 kg for both males and females, and estimated adult height is 58–61 cm for both sexes. The estimated lifespan is 10–12 years. These are modelled estimates and may vary.
The breed is described as courageous, intelligent, loyal, protective, calm, and confident. However, individual dogs may vary, and temperament is influenced by training, socialization, and environment.
The breed has an energy score of 4 out of 5, indicating a high need for regular exercise. It is not suited for apartment living (apartment suitability score 2/5) and likely requires space and daily activity.
The breed has a short coat and a grooming score of 1 out of 5, meaning minimal grooming is needed. Shedding is moderate (score 3/5).
Child suitability is rated 4 out of 5, suggesting it can be good with children when properly socialized. Dog compatibility is rated 3 out of 5, indicating it may be selective with other dogs. Individual experiences may vary.
The breed originates from Uruguay. It descends from dogs brought by Spanish and Portuguese colonizers and developed as a feral breed through natural selection.
Recognition status varies by registry. It is recognized by the FCI and was officially recognized in Uruguay in 1989. However, recognition by other registries may differ.
Image source: The Dog API. Last reviewed 7/20/2026.