Labored Breathing In Older Dogs. Once it is appreciated that some breathing problems in dogs can be caused by serious illness, it is easier to feel more comfortable that an allergy is the most common cause of dog breathing issues. Labrador retrievers are the most commonly affected breed.
If your pup has already been diagnosed with arthritis, giving him a baby aspirin can help relieve his discomfort and calm his breathing. This is just because it takes more effort for your dog to do anything. The causes of laboured breathing in dogs are varied.