What are the symptoms of heart-lung failure in older dogs?
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👁 5975 views 💬 20 replies Respiratory System
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Expert Answer
Heart-lung failure in older dogs has acute and chronic forms. Acute onset is sudden – severe difficulty breathing, gasping, and cyanotic (blue) mucous membranes. Do not stimulate the dog; place it in a ventilated area and rush to the vet. Chronic failure lasts months, with lethargy, reduced appetite and panting even on mild activity.