Dogs with kennel cough are often reluctant to eat because their throats are sore, which can be a problem because they need extra nutrients to help their immune systems stave off secondary infections. One way to encourage dogs to eat is to warm up their food a little, which releases aromas that stimulate their appetites. One also recommends stirring chicken or beef broth into their food. This makes it more appetizing and also softens it so they’ll find it a bit easier to get down.
