They usually occur because of the hormonal imbalances associated with Cushing's disease and hypothyroidism; treating them reduces the excess circulating lipids. Miniature schnauzers as a breed are prone to this condition spontaneously with no underlying disease. 
A low-fat diet supplemented by omega-3 fatty acid geneally helps reduce them. Anticholesterol medication, as humans take, is also available. 
- ↑ 1.0 1.1 Brooks, Wendy C.. The Hard to Regulate Diabetic Dog. Veterinary Partner.
- ↑ Jones, Boyd R. (2003). Hyperlipidemia in Dogs and Cats. WSAVA.
- ↑ Xenoulis, Panagiotis G., Suchodolski, Jan S., Levinski, Melinda D., Steiner, Jörg M. (2007). Investigation of Hypertriglyceridemia in Healthy Miniature Schnauzers. Journal of Veterinary Internal Medicine.
- ↑ The Hard to Regulate Pet-Cholesterol Medication. Marvistavet.
- Subclinical Pancreatitis is More Common in Overweight and Obese Dogs if Peak Postprandial Triglyceridemia is >445 mg/dl-page 51, Abstract #336 ACVIM 2008, Posters
- Metabolic Syndrome and Dyslipidemia in Dogs Jericó, Márcia Marques, 2009, WSAVA