Any canine owner will probably at some stage have heard dog hiccups. It is quite common, particularly puppies, for dog hiccups to occur, they get them just like people. A spasm in the diaphragm pulls air abruptly into the lungs. The sudden rush of air can move the vocal cords creating the familiar sound. Dog hiccups can come in rapid succession or have long delays in between. They can last for a few minutes or even longer. In general, dog hiccups are minor and usually go away on their own.
The hiccups can be caused by what your dog ate or drank, some minor stomach disorder or stress. If your dog hiccups all day, then it would be wise to contact the local veterinarian. Dog hiccups can be exhausting for the animal and, in rare cases, could be a symptom of a more serious disorder. It has been suggested that hiccups in dogs - and humans for that matter - represent a primitive reflex similar to that of the opening and closing of gills in some lower vertebrate animals.