Chien des Pyrenees "Jer"

An example of one of France's early show dogs - "Jer". The front of the card reads "Chien des Pyrenees "Jer" 1st prix Exposition Canine de Cauterets 1920 - A.M. Roubaud Hotel Ermitage - LOURDES".  Some more digging is required to identify the dog, kennel, and owner which, I hope, one of our readers may have the answer.  This is a hand coloured card produced in the 1920s.