Causes can include:Feline blastomycosis Asthma in Cats Blastomycosis in Dogs Bronchitis in Dogs Valvular Heart Disease in Dogs Hernia in Dogs Bordetella 101: Kennel cough and your dog Megaesophagus in Dogs Dilated Cardiomyopathy in Dogs Feline Upper Respiratory Infection Heartworm Disease In Dogs What Happens When Your Dog's Windpipe Collapses? The Dangers of Rat Poison to Dogs and Cats Canine Influenza Breathing Problems in Dogs and Cats: Dyspnea The Dangers of Esophageal Foreign Bodies in Dogs Intestinal Parasites in Dogs Valley Fever (Coccidioidomycosis) in Dogs Tuberculosis in Dogs and Cats Congestive Heart Failure in Dogs Congestive Heart Failure in Cats Is Your Seemingly Healthy Senior Cat Hiding Heart Disease? Recording Video for Your Veterinarian Mitral Insufficiency: A Leading Cause of Heart Failure in Cats Dilated Cardiomyopathy in Dobermans My Dog Just Ate An Asthma Inhaler. Is It Poisonous? 8 New Year's Don'ts For Your Pet Kennel Cough: Signs and Symptoms Laryngeal Paralysis Is Not a Death Sentence Feline Heartworm Disease What are Roundworms and Why Should I Care? Aspiration Pneumonia in Dogs Deadly Leptospirosis in Dogs: What You Need to Know to Protect Your Dog Sick Sinus Syndrome (SSS) in Dogs Atrial Fibrillation: Why is My Dog’s Heart Beating so Fast? Cleft Lip and Palate in Kittens Cleft Lip and Palate in Puppies Is It Normal for Cats To Cough? Outbreak of Canine Influenza Virus in Chicago: Is Your Dog at Risk? What Causes a Feline Hairball? Chicago's Mystery Dog Virus Outbreak Identified as Asian Strain Pasteurella in Dogs Pasteurella in Cats Why is My Cat Coughing: Heartworm Associated Respiratory Disease (HARD) Do Cats Get Colds? Heat Stroke in Dogs: Test Your Knowledge with This Quiz! 5 Tricky Conditions You Might THINK are Hairballs Canine Respiratory Disease 101: Do Dogs Get Colds?