Reverse sneezing, known more formally as pharyngeal gag reflex and paroxysmal respiration, is exactly what it sounds like it is, says Dr. Kelly Diehl, DVM, MS, senior director of science communications at Morris Animal Foundation based in Denver, Colorado. Unlike a regular sneeze, a reverse sneeze pulls in air quickly with force instead of expelling air out. It usually doesn’t last longer than a minute. “Dogs can make odd sounds during an episode of reverse sneezing, and, for many dog owners, it can be scary watching a dog reverse sneezing,” Dr. Diehl says. The good news? The act of reverse sneezing isn’t harmful to the dog. “While it can be quite concerning for pet parents seeing it for the first time, reverse sneezing usually isn’t serious and is quite common,” says Dr. Kristan Riley, DVM, a Heal House Call Veterinarian vet in North Carolina specializing in hospice care for pets. However, it’s important not to confuse reverse sneezing with coughing or choking, as these are considered emergencies and require immediate attention.,Q: I notice that my dog will make loud snorting or honking sounds from time to time, almost as if something is irritating the back of his throat. It sounds kind of like what a backward sneeze would sound like, but it is deeper and more guttural. Is this normal? Should I be concerned?