Dogs with GDV typically have a hard, swollen abdomen and show signs of extreme distress, including retching without vomiting, drooling, and restlessness. Large, deep-chested breeds are more prone ...

Large, deep-chested dogs like the Saint Bernard are also at increased risk of gastric dilatation-volvulus (GDV). “The dog’s stomach bloats and becomes twisted on itself which can be fatal.