Clinical, pathomorphological and immunohistological findings of generalised tuberculosis diagnosed in a 1-year-old male tabby cat were evaluated. Macroscopic examination revealed greyish-white nodules, exceeding the surface of the organ, in the meninges and kidneys. The meninges nodules were of the size of a pinhead and those in the kidneys were 0.2-0.5 cm in diameter. The mediastinal lymph nodes were observed to be enlarged, and their cut surfaces displayed nodules of a similar appearance and size. Microscopic examination revealed typical tubercles in the cerebrum, cerebellum, kidneys, and mediastinal lymph nodes. The presence of Mycobacterium tuberculosis either free or located within the cytoplasm of macrophages was demonstrated by means of the avidin-biotin complex peroxidase method.