Since coming back from their home boarding both of my dogs have been reverse sneezing more than normal. The same night my oldest reverse sneezed for the longest time he has ever done it. He seems to be settling down, although it is still more frequent. My yorkie though does it the most and I'd not really seen it with her before. She also does a few sneezes at other times. I wouldn't take them to the vet for a reverse sneeze normally, but wondered if it was caused by any damage e.g they'd be pulling a lot when walking with her as they were both anxious when I picked them up.