Cimarrón Uruguayo – Highly Intelligent Guard

What makes the Cimarrón Uruguayo Unique?

The Cimarrón’s survival story and fierceness has made it something of a national symbol in Uruguay, and the breed is the mascot of the National Army of Uruguay.


Size: Males – 58 to 61 cm (23 to 24 inches)
Females – 58 to 61 cm (23 to 24 inches)
Weight: Males – 38 to 45 kg (84 to 99 lb)
Females – 38 to 45 kg (84 to 99 lb)
Origin: Uruguay
Life Span: 10 – 12 Years
Colour: Pale yellow (“bayo”), with a black face
Litter Size:            4 to 5 puppies

Is the Cimarrón Uruguayo Right For You?

The Cimarron Uruguayo is a working dog first and foremost, and exhibits the temperament one would expect of such a breed. Because the breed is primarily kept as a working dog, there is not much available information on its temperament outside of a working environment. This breed is said to be very loyal and attached to its family. As is the case with all breeds, the Cimarron Uruguayo must be carefully trained and socialized to accept children, and should always be monitored when in their presence. Because the breed tends to be dominant and challenging, the Cimarron Uruguayo is not a good choice for a novice dog owner.

In 5 Words

  • Courageous
  • Alert
  • Hunter
  • Keen
  • Lively
Fun Fact



Health Issues

Learn About the Cimarrón Uruguayo



The Cimarrón Uruguayo is large in size, compact and muscular. The coat is short and usually brindle but may be a pale yellow (“bayo”), with a black face. The Cimarron Uruguayo is generally similar to other Molosser-type dogs, but has one of the most distinctive appearances of any member of that group. It is strong, compact, with heavy bones, well muscled and agile. According to some, they are descended from dogs introduced by the Spanish and Portuguese conquerors of Uruguay. Cimarrón Uruguayo is a short, smooth, close to the body, with undercoat. Long hair is disqualify fault.

Short History

Short History of the Cimarrón Uruguayo

The Cimarrón Uruguayo descends from European dogs brought by early colonizers, and released or abandoned. The dogs adapted to living in the wild in Uruguay, and in time became numerous. In the eighteenth century, attacks on livestock and even humans resulted in the dogs being hunted, with bounties paid by the government for each dog killed.

The origin of the Cimarron Uruguayo can be traced back to 17th century Uruguay, when the breed was brought to the area by Spanish traders. The origin of the Cimarron Uruguayo is uncertain, though it is thought to be descended from dogs that were brought into Uruguay by the Spanish and Portuguese conquerors. Many of the domestic animals that where brought into América by the first conquerors, turn back to live in freedom, becoming wild.

The Cimarron Uruguayo was first developed hundreds of years before written records were kept of dog breeding, and spent most of its history as a feral dog. The Cimarrón Uruguayo is the only breed of dog native to Uruguay. Unfortunately the exact breeds that went into its make up are unknown.



The breed standard states that the dog should have great courage. As with all large dogs, the Cimarrón Uruguayo must be well socialized when very young if it is to be safely kept as a companion. The Cimarron Uruguayo is a working dog first and foremost, and exhibits the temperament one would expect of such a breed.

This breed is intelligent, courageous, strong and agile. This clever breed has a docile temperament, though only with its humans. They are aggressive towards strangers and intruders, but is calm around its human pack. They are superb guard dogs and a firmly loyal companion. Also, the Cimarrón Uruguayo must be socialized at and early age if it is to live with a family. Children should not be left unattended with Cimarron Dogs. The preferred colors of the short coat are all shades of fawn and brindle with or without mask.

Cimarrón Uruguayo is aggressive toward strangers and intruders, it is balanced and calm around its human family.

Caring for Your Cimarrón Uruguayo


General Health

It does not appear that any health studies have been conducted on the Cimarron Uruguayo which makes it impossible to make any definitive statements about the breed’s health. While the Cimarron Uruguayo is typically known as a healthy and hearty breed, they do suffer from a few health problems, including: hip dysplasia, elbow dysplasia, hypothyroidism, cryptorchidism – failure of one or both of the testicles to fully descend, obesity, overeating, and bloat.

Grooming & Bathing

Grooming & Bathing

This is an easy breed to care for. Similar to any other short coated breeds, brushing the coat once or twice a week would be sufficient to maintain its tiptop condition.

It is highly advisable that owners introduce their Cimarron Uruguayos to routine maintenance procedures such as bathing and nail clipping from as young an age and as carefully as possible as it is much easier to bathe a curious 10 pound puppy than a frightened 90 pound adult.

Exercise & Training

Exercise & Training

This is a working dog, one that would require plenty of exercise to maintain its fitness level.