Vol. 10, Special Issue 10 (2025)

A study was conducted to find out the occurrence of mammary tumours in dogs. A total of 45 female dogs were diagnosed with mammary tumours out of 171 tumour affected dogs. The annual incidence rate of mammary tumours in dogs recorded as 26.31%. The pure breed dogs showed higher incidences of mammary tumour than the mongrels. Small sized breeds showed high incidence than the large sized breeds. The mean age of dogs affected with mammary tumour was 7.36 years and it ranged from 2 to 16 years. Mammary tumours were found exclusively in female dogs. The mammary tumour occurrences in intact animals are higher than the spayed animals. The whelping history revealed that 60% of the dogs were non-whelped, 6.67% were whelped once and 33.33% were whelped more than once. The occurrences of mammary tumours in dogs were influenced by breed, age, sex and reproductive status.