Chakravarthi, RSenthil, NSubapriya, SVairamuthu, STANUVAS2020-03-092020-03-092020-02http://krishikosh.egranth.ac.in/handle/1/5810145079TNV_20thMVC_PP_Feb-2020_PA39The present work was based on retrospective study of 386 biopsies of dogs received over a period of four years (2015 to 2018) in and around Chennai at Madras Veterinary College.The sex-wise distribution of tumorcases revealed higher incidence 226 cases (58%) in females and 162 (42%) in males. Maximum number of cases were 208 cases (53.8%) in the age group of 5-10 years followed by 90 cases (23.3%) in above 10 years and 89 cases (23.1%) in 0-5 years. The incidence rate were of Mammary gland Neoplasm (25.64%) followed by Transmissible Venereal Tumour (15.8%), Lymphoma (11.39%), Adenocarcinoma (11.39%), Perianal Adenoma (6.73%), Lipoma (6.47%), Mastocytoma(5.95%), Fibrosarcoma(3.88%), Squamous cell carcinoma (2.59%), Histiocytoma (2.33%), Melanoma(1.55%), Pappiloma(1.29%), Hepatocellular Carcinoma (1.03%), Transition cell carcinoma(0.77%), Mesothelioma(0.77%), Osteosarcoma(0.77%), Sebacious Adenoma (0.25%) and Blood Cell Carcinoma(0.25%).The incidence of neoplasms was highest in Non-descript Dogs (ND) (34.97%), Labrador retriever (25.91%), Spitz (15.28%), Doberman (7.25%) and German Shepherd (GSD) (3.89%) respectively.enVeterinary SciencePresentation