Prevalence of different types of neoplasms among dogs of Himachal Pradesh, India : A preliminary study

Neoplasms are the more common and leading cause of death in dogs. The increased lifespan of dogs due to better nutrition and prophylactic measures made them more susceptible to tumors. The present study was conducted to find out the prevalence of various types of tumors in dogs in the area of Himachal Pradesh. The surgically removed tumor tissue samples were fixed with 10% neutral buffered formalin, processed, stained with hematoxylin and eosin, and examined under the microscope. A total of 56 dogs were found to be affected by one or another type of neoplasm during the period from 2016 to 2018. The prevalence of these neoplasms was categorized according to sex, age, location-wise and tissue type on histological examination. The present study showed female dogs had the highest prevalence rate of 55.36% compared with male dogs 44.64%. The dogs of the age group of six to nine years had the highest prevalence rate of 35.71% and lowest 37.50% in the age group of less than 3 years. Genitalia was found to be the most common site affected by the tumor. A transmissible venereal tumor (TVT) has the highest prevalence rate of 37.50% followed by squamous cell carcinoma (12.50%) and mammary carcinoma (10.79%).