Czechoslovakian Vlcak History

Czechoslovakian Vlcak sled race


In 1958, a biological experiment took place in Czechoslovakia (CSSR at that time), which included 40 working German Shepherd Dogs and four Carpathian wolves; Brita (female), Argo (male), Sarik (male), and Lejdy (female). Col. Karel Hartl (“Hartl”) and Frantisek Rosik (“Rosik”) were the co-founders of the breed. Hartl came up with the idea of using wolf DNA to develop a superior German Shepherd that has the hearing, scenting, sight, weather-resistance, and endurance of the wolf. Rosik, who was known by dog enthusiasts as “Dedo” (Granddad), had the idea of developing a new breed to become internationally recognized.

“Dedo” (Granddad) with his Czechoslovakian Vlcak dog
“Dedo” (Granddad)

In 1964-65, the results of the experiment were published and a new breed emerged that would be a quick learner, with a solid structure, high persistence, resistance to adverse conditions, and fast reactions. According to Hartl, the German Shepherds of the Border Guard had around 1,200 dogs which had to be excluded from service at the age of eight due to their inability to continue to perform.

Only one percent could tolerate the strains of service to the age of ten. The dogs showed low endurance and considerable fatigue when requested to cover distances of 31 miles at temperatures of 60 degrees Fahrenheit. Those same dogs took approximately sixty hours to recuperate after working in these conditions. The Border Guard dogs suffered frequent illnesses and a high puppy death rate. Hartl stated that the third generation of hybrids would overtake the German Shepherds on a track because of their superb orientation abilities, endurance in running, and the excellent, resilient quality of their fur.

Czechoslovakian Vlcak dog

The selective breeding process was the beginning of the dog we know today as the Czechoslovakian Vlcák (“CsV”). Being a more recently developed breed, the bloodlines are very well-documented. There are five distinct bloodlines that resulted from the four Carpathian wolves used in the breeding program. The first two lines were established by Brita in 1958 and 1960. The remaining three lines were established by Argo (1968), Sarik (1972), and Lejdy (1983). The breed lines were closed after the establishment of Lejdy’s bloodline.

On March 20, 1982, the Czechoslovakian Vlcak was recognized as the National Breed of Czechoslovakia. The first 43 puppies were registered in Prague with the Main Pedigree Register. More than 1,500 puppies would be registered over the next 10 years.

One of the requirements for recognition by Fédération Cynologique Internationale (“FCI”), the world canine organization, was to show the breed’s working abilities. Rosik reached out to Peter Krotkovský (“Krotkovskÿ”) who has been interested in cynology since he was eight years old. Initially, he had German Shepherds, but after meeting with “Granddad” Rosík, he turned to breeding Czechoslovakian Vlcak. Krotkovský was tasked with building mushing teams and carts.

On January 16-17, 1988, the Czechoslovakian Vlcak mushing teams competed at their first sled race in Slovakia. The CsV teams were up against strong competition from the Nordic breeds and the Czech mountain dogs. The race was 12km (approximately 7.5 miles). The CsV teams won both
categories. Krotkovský, Mirko Polák, and Juraj Bognár competed in Category C, which included 2-3 sled dogs, and placed First, Second, and Third respectively. Daniel Filo and Jindra Jedlicka competed in Category B, which included 4-6 sled dogs, and they placed First and Second respectively.


Encouraged by growing interest in the Czechoslovakian Vlcak, club members began to organize competitions where it was possible to exhibit the breed’s physical and behavioral traits as well as overall performance. Evaluation of the sled races determined that the Czechoslovakian Vlcak was not a sprinter, but preferred mid- to long-distance races using an energy-saving low trot.

Czechoslovakian Vlcak reached an average speed of 12-13 km per hour (7.5-8mph). Based on this, the club set endurance testing conditions for the breed, which included running alongside the bike for 40, 70, and 100km (SVP1, SVP2, SVP3). These are recognized as working exams in Slovakia. For the first time in history, 40km (approximately 24.8 miles) speed races and 100km (approximately 62 miles) endurance runs with the dogs took place.

Evaluation of the sled races determined that the Czechoslovakian Vlcak was not a sprinter, but preferred mid- to long-distance races using an energy-saving low trot.

In 1989, the breed was granted provisional recognition by Fédération Cynologique Internationale (“FCI”). The goals of the breed club were to continue breed development to achieve FCI breed recognition for its beauty, grace, grandeur, and great working abilities. Karel Hartl, František Rosík, Jozef Sopuch, and Oskar Dóra collaborated on the breed standard based on the dog Rep z Pohranicni Straze (F3). “Rep” was born on November 11, 1979, and produced over 244 offspring. Rep contains blood from both Carpathian wolves, Sarik and Brita. The author of the illustrated Czechoslovakian Vlcak breed standard is Luboš Zaremba.

Today, the breed is fully recognized by the FCI (1999) and the United Kennel Club (2006), and is accepted into the American Kennel Club’s Foundation Stock Service (2001).

Czechoslovakian Vlcak dog drawing

The Czechoslovakian Vlcak is an excellent guardian and companion. One of their tests (bonitation) shows that they can cover 62 miles in less than 8 hours without any issues. Their olfactory characteristics are outstanding, and they possess superior eyesight and hearing.

The Czechoslovakian Vlcak is a versatile breed, built for endurance. They also excel in scent work, tracking/trailing, and searching. They are extremely loyal but exercise vigilance, especially with strangers.

  • Sharon DiGennaro is a Law Enforcement Police K-9 Handler in Central Florida. She attended the world’s finest Navy, Master-at-Arms school and held Top Secret/Sensitive Compartmented Information (TS/SCI) clearances. After the military, she continued her education to include an Associate of Arts degree in Criminal Justice and an Associate in Science in Business Administration. Sharon has attended numerous seminars for tracking, defense, and obedience. She completed 880 hours of law enforcement K-9 handling school, which included narcotics, tracking, and patrol. As a police K-9 Handler, she and her German Shepherd K-9 specialize in drug detection and patrol missions. Whether handling crime prevention, locating missing/endangered citizens, or being the first line of defense in a critical state, they are trained to deal with any situation. Sharon is also the Secretary of The Czechoslovakian Vlcak Club of America, Inc. (CSVCA). In addition to her secretary roles, her responsibilities include the club’s newsletter and any AKC breed recognition requirements. She is the author of the article series, “Working Around the World,” which includes interviews with experienced CSV trainers in other countries and their accomplishments with their dogs. She hopes these articles will inspire more owners to train and possibly compete with their dogs. Sharon hosted a Meet the Breed in Lakeland, Florida, and attended the AKC Meet the Breeds in Tampa. She is a CSVCA approved breeder under the kennel name DireWolf Pack. Her dogs have obtained the second Grand Champion for the breed, the third Certificate of Merit, the first Begleithund (BH) and Ausdauerprüfung (AD) in the US, and multiple Bests in Show/Open Shows. Earlier this year, she attended Peter Krotkovsky’s breeding seminar in the United Kingdom. Sharon enjoys sharing history, experiences, and training tips, so if you have any questions, please contact her at

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