Gastric Dilatation-Volvulus: Commonly called bloat, this is a life-threatening condition that affects large, deep-chested dogs like Golden Retrievers, especially if they are fed one large meal a day, eat rapidly, drink large volumes of water after eating, and exercise vigorously after eating. Bloat occurs when the stomach is distended with gas or air and then twists. The dog is unable to belch or vomit to rid itself of the excess air in its stomach, and the normal return of blood to the heart is impeded. Blood pressure drops and the dog goes into shock. Without immediate medical attention, the dog can die. Suspect bloat if your dog has a distended abdomen, is salivating excessively and retching without throwing up. He also may be restless, depressed, lethargic, and weak with a rapid heart rate. It's important to get your dog to the vet as soon as possible.