EN
Anatomic and histopatological examinations were carried out on 24 foxes 2 do 4-month old that died with symptoms typical of the chronic cor pulmonale syndrome. Some posthumuos changes were determined in the chronic cor pulmonale syndrome characteristic of circulation insufficiency, myocardial hypertrophy, ventricle dilator. Massive adipose degeneration of the liver and parenchymatous of the kidney, including necrosis were determined. No changes in the lymphatic system were reported, that could imply a possibility of a bacterial or viral infection.