Siv qualified from Tierärztliche Hochschule Hannover, Germany, in 1989. After a year in mixed practice in Norway, she returned to Germany spending 6 months at an equine clinic. Thereafter Siv went to Uppsala in Sweden, and worked for  3 years at the Swedish University of Agricultural Sciences, Department of Equine Medicine and Surgery. In 1994 she returned to Oslo and worked for  5 years at a large equine hospital at the racetrack before she went to her present workplace at the Norwegian University of Life Sciences, Equine Hospital. Siv  did an alternative residency in internal medicine and became a Diplomate of the European College of Equine Internal Medicine in 2010. In 2017 she completed  her PhD thesis “Acquired Equine Polyneuropathy – clinical, pathological and epidemiological aspects”. As an associate professor in internal medicine, Siv is now dividing her time between the clinical work at the hospital, teaching students and postgraduates, including giving lectures at courses and conferences, and doing research. Siv covers  all parts of internal medicine, but her favorite areas include neurology and foals.