PLEURAL CAVITY • DICCIONARIO INGLES.COM • Definition of Pleural cavity

... pain. Large animals rarely lie down. The cough is short and painful. On placing the ear against the wall of the chest and listening to the respirations, we are able to hear friction sounds. After a few days effusion occurs in the pleural cavity. Although the animal may have refused to eat up to this time, it now appears greatly relieved and may offer to eat its feed. This relief may be only temporary. If the fluid exudate forms in sufficient quantity to cause pressure on the heart and lungs ...

— Common Diseases of Farm Animals • R. A. Craig, D. V. M.