Symptoms of bloat include burping, enlarged abdomen, pacing, heavy panting, growling stomach, attempted vomiting, and heavy salivation. The dog will refuse to lie down because of the pain. Bloat occurs within minutes and can be life-threatening if the stomach has turned on itself. See Indigestion in our A-Z Ailments guide for more information. This is a serious condition and is most common in deep-chested, large breed dogs, particularly the Great Dane, Saint Bernard, mastiff, and borzoi, who are fed commercial pet food. If your dog is susceptible to bloat, you ought to get a bloat kit and learn how to use the stomach tube as a first-aid measure. The best thing you can do is get your dog to a veterinarian as quickly as possible.