- Equissage: Equine Sports Massage Therapy Certification Program, a nationally and internationally recognized leader in equine massage schools, offers a week-long certification program in Virginia, from which over 4, 000 students have been certified as Equine Massage Therapists, trained by Mary Schreiber. Equissage offers a home-study course on animal companion, dog massage as well as the on-site ...www.equissage.com