A post-mortem examination was carried out on a 4-month-old giraffe which was reported dead early hours of the morning in the zoological garden, University of Ilorin. The carcass of the animal appeared slightly emaciated and on opening of the carcass the abomasum was distended with a hard mass felt inside the organ. On opening of the organ, it was filled with sand and weighing 3.8kg. Geophagia due to various factors were queried in the cause of the condition including seasonal prevalence, nutrient deficiencies, feeding regimen and also housing inadequacies. Although poor milk intake, absence of maternal nurturing and inadequate captive conditions are the most likely causes of geophagia which eventually led to the death of the animal.