Diabetes mellitus (Dm) is a common endocrinopathy both in man and animals (Prathaban and Gnanaprakasam, 1995). Body zinc (Zn) status has a definite relationship with diabetic condition (Chatterjee, 1988; Chausmer, 1998). The present study intends to highlight the diagnostic and prognostic value of serum Zn status in diabetic dogs.