Sandra Rutz worked as a veterinary assistant for 20 years and now owns a dog physiotherapy practice. She is also qualified in structural canine osteopathy and is a sport dog therapist and a passioned search dog trainer who trains future trainers. Carmen Heritier, former Mayer, develops the Gymnastricks exercises due to an illness of her own beagle and published her first Kynos book a few years ago. She is a canine fitness trainer, Mantrailing trainer and international Dog Dance judge. She also trains Gymnastricks trainer.