graduated in the first class (1990) of the Atlantic Veterinary College (University of Prince Edward Island, Canada) and went on to the University of Tennessee for a one year large animal internship. He earned his postgraduate degree (Doctor of Veterinary Science in population medicine / epidemiology) from the Ontario Veterinary College in Guelph, Ontario, Canada in 1997. He received his AVCA certification in 1996 through Options for Animals, and moved to mixed animal practice in Germany in 1997.

In 1999 he and his wife Sybil opened a referral practice for animal chiropractic in Northern Germany. In 2001 and 2004 Donald took part in continuing education seminars in Appilied Kenesiology. Since 1999 he has been practicing exclusively veterinary chiropractic, adding veterinary acupuncture in 2002 after taking the International Veterinary Acupuncture Society certification course. He is a founding member of the Gesellschaft für Veterinär-Chiropraktik e.V./ (now the International Veterinary Chiropractic Association).

Donald has years of experience in teaching clinical veterinary medicine to final year vet students in Tennessee and Guelph, and has been teaching animal chiropractic since 2003.