Micro minerals or trace elements, are essential nutrients required in small quantities but play vital roles in maintaining physiological and metabolic functions in animals. This article explores the requirement and functions of micro minerals based on research studies and scientific evidence. It highlights the role of key minerals such as iron, zinc, copper, iodine, selenium, manganese and cobalt in growth, immunity, reproduction and productivity. The issue of micro-mineral deficiencies in the Indian dairy sector and their impact on milk yield, health and economic losses is also discussed. Additionally, factors affecting mineral requirements and the importance of balanced supplementation and scientific feeding practices are emphasized. Ensuring proper mineral nutrition is crucial for improving animal health, productivity and sustainability.