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What Should You Do If Your Dog Coughs? - PetsFoodNutrition.com Honey can help relax your dog’s throat and reduce coughing, making it an excellent home cure for kennel cough. One-half spoonful to one tablespoon honey mixed with a little warm water in a bowl can be given to your dog. Depending on how often your dog coughs, you can give this up to three times daily.