The only time it is normal to see a cat pant is when they are mildly overheated. They are not like dogs where panting is commonly observed. Other causes of panting in cats include pain, stress, respiratory issues, anxiety, cancer. In this case, QQ was playing in the barn on a hot day so his panting was due to normal play in a warm environment. After resting, he stopped panting. Otherwise, a cat panting can be a warning sign that something more serious is awry and a vet visit is a good idea. #drj