Globally, whether working in a continuously housed dairy or a grazing herd, it is generally accepted that the transition period brings the complexity of shifting metabolic priorities. Grazing dairy cows may have distinctive risk factors and a different level of prevalence to consider when assessing the challenge of subclinical hypocalcemia (SCH); however they are no less at risk of suffering from similar loss of performance as continuously housed cows. While many research questions remain regarding mechanisms, direct causes, and best management, work in the current study emphasizes the importance of SCH in grazing systems. To limit losses associated with calcium dysregulation like SCH, it is prudent to pursue interventions that can be applied to a diverse range of systems and management practices.