Two stud dogs played a large part in the development of the Laekenois and the Bouvier in Holland during the first decade of the 20th Century. The first was Trotteur, an unregistered rough hair. Trotteur was from Duc x Duchesse, and through Duc a grandson of the Laekenois Vos II and Belle de Saint-Nicolas. In 1907 Trotteur sired Cochere NHSB 3282, a sandy rough hair registered as a French Shepherd. The dam of Cochere was Cora, from the Laekenois Turc x Lot. The following year Trotteur sired Vivandiere NHSB 2454, a sand colored rough haired Belgian Shepherd Dog. The dam of Vivandiere was Nitouche, sister of Cora, the dam of Cochere. In 1911 Trotteur won a 1st prize at the Amsterdam show as a “Chien de Bouvier”, although his known origins were Laekenois.|
The Trotteur, in the photo (see Laekenois Trotteur), may or may not be the sire of Bouvier Cochere and Laekenois Vivandiere. The photo does serve to illustrate the similarities between the Dutch, Belgian, and Bouvier French Shepherds at the beginning of the 20th Century.
The other stud dog was Tuf-Tuf, also unregistered, who in 1909 took a 1st prize at Utrecht, shown in the rough haired Belgian Shepherd class. Tuf-Tuf was from Primus x Cora, with no clues to his ancestry other than his sire/dam. Bred to Favorite NHSB 3638, a younger sister of Cochere, Tuf-Tuf sired Jacot NHSB 4179 and Protegee NHSB 4189, on April 3, 1912. Jacot was registered as a sand colored rough haired Belgian Shepherd Dog, while Protegee was registered as a sand colored rough haired Chien de Bouvier.
This pattern, of Trotteur and Tuf-Tuf siring both Belgian and French Shepherds, continued until World War I brought everything to a halt. Following WWI, the Raad van Beer studbooks contained no ties to the pre-war dogs. Whether they continued and were behind some of those registered as from “unknown origins” or from those listed with only unregistered sires and dams, remains undiscovered.
(Early 20th Century Interrelationships between the Laekenois, Dutch Shepherd, and Bouvier by Mara Lee Jiles, belgiandogs.info)