These include heavy panting with an enlarged tongue (shaped like a spoon), foaming at the mouth, weakness, trouble standing up, wobbly or uncontrolled movement, and glazed eyes. (mnn.com)
Other causes of heavy panting are heart problems, respiratory disorders, various medications and Cushing \ \ \'s syndrome. (petpremium.com)
He never seemed to be in pain, even before surgery but tonight he seems to be in pain with heavy panting. (wagwalking.com)