Affected cats may cough, wheeze, and have labored breathing and shortness of breath, especially after exertion. A characteristic wheezing sound happens when air is forced through the narrowed airways.

According to Nelson, cats infected with bird flu commonly display severe respiratory symptoms—including coughing, eye and nasal discharge, fever, labored breathing, and a loss of appetite.

A cat owner from Las Vegas revealed how she ... Richardson said other symptoms of feline asthma include labored breathing (rapid or open-mouth breathing); shortness of breath (dyspnea); increased ...