Strangely enough one of my boys gets it from time to time but the attacks have been getting less again now. He does breathe quite rapidly when chasing about too much and occasionally this might bring on a cough. Had him checked over by the vet but he could not hear anything so he said to just observe him. found a really good website on cat asthma though. It was very good and also explained the differences between asthma and other diseases to do with the lungs- which luckily , as in the case of cancer, did not include the coughing or rasping as much.