The present report describes incidence, treatment and prognosis of fibroma durum in a stray dog. A 5-year-old un-neutralized stray adult female dog was presented with a weighing 18.2 kg, with a large, firm mass protruding at ventral portion of thoracic region. Needle aspiration of the mass revealed not clotted blood. Blood analysis showed a mild increased in Erythrocyte Sedimentation Rate, Mean Platelet Volume, Aspartate Aminotransferase, and total serum protein but decreased Platelet and White Blood Cells than normal. Thus, it was preliminarily identified as a tumor according to physical examination and needle aspiration technique result. Histopathological outcomes revealed that the mass consists of abundant mature and immature fibroblasts. Therefore, the enlarged mass was diagnosed as a fibroma durum. This mass, which was restricting her movement and causing significant stress and depression, was successfully managed through our surgical intervention. Post-surgery, the dog's movement improved, and she showed signs of reduced stress and depression, showcasing the resilience of this stray dog.

Keywords: Stray Dog, Fibroma, Tumor, Surgery