Samples of tumours collected during necropsies or received from veterinary clinics, as well as biopsies were analysed. The analysis revealed 2259 tumours, including 1814 (80.30%) cases from dogs, followed by 295 (13.06%) cases from cats, 79 (3.50%) cases from horses, and 71 (3.14%) cases from exotic animals. Skin and subcutaneous tissue (45% of dogs and 48% of cats), and mammary gland (23% of dogs and 29% of cats) were the most common location of tumours. Malignant forms prevailed in dogs

more »

... cats (66%), and horses (89%). The analysis revealed interesting facts concerning the middle age of dogs and cats with tumours present with a peak in nine-year-old dogs and 10-12-year-old cats.