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The present study was contemplated to find out the epidemiology of mastitis in lactating cattle and buffaloes in tehsil Burewala, Pa istan. For this purpose, a total of 673 animals (n= 291 cattle, n= 382 buffaloes) from 300 livestoc farmers were tested using Surf Filed Mastitis Test (SFMT) for the presence of mastitis. A higher prevalence (24.60%) of clinical mastitis was found in buffaloes than cattle (18.21%). The prevalence of sub-clinical mastitis was 36.38% and 33.67% in buffaloes and cattle, respectively. Quarter based prevalence of clinical mastitis in buffaloes and cattle was 8.04% and 5.75%, respectively. Quarter based prevalence of sub-clinical mastitis was 16.04% in buffaloes and 14.47% in cattle. Ris factors of mastitis found were: age, lactation number, stage of pregnancy, stage of lactation, dry period length, hard mil ing, calf suc ling, folded thumb mil ing technique, teat injury, bac yard housing, bric s floor, uneven floor, poor drainage system and low frequency of dung removal.