Difficulty breathing — which is also called dyspnea — is one of the most common signs seen in animals with heart disease. (vetmed.tufts.edu)
Severe dyspnea and respiratory crackles due to acute or delayed pulmonary edema could develop in cats. (zoetisus.com)
A 64 - year - old male with history of Acute Myelogenous Leukemia (AML) status post bone marrow transplant (BMT) in complete remission presented with dyspnea when laying on his right side which resolved when supine or in the left lateral decubitus position. (scmr.org)