I have a healthy 10 yr old Dane who still walks about a mile and a half each day. During a routine vet visit, the Dr heard her breathing & said she may have laryngeal paralysis. When she is excited, her panting is louder, but she has not been intolerant of exercise & often returns from her walk to run around the yard like a puppy. Is there any other explanation for the loud panting when she is excited? Hate to have her anesthetized if unnecessary. Any other clinical signs I should be looking for?