Bloat is a meical condition in which the stomach becomes overstretched by excessive gas content. It is also commonly referred to as torsion, gastric torsion, and gastric dilatation-volvulus (GDV) when the stomach is also twisted. The word bloat is often used as a general term to cover gas distension of the stomach with or without twisting. The name comes from the Middle English blout, meaning soft or puffed, which is from the Old Norse blautr, meaning soft or soaked.Meteorism, its name derived from the writings of Hippocrates, is now rarely used in English. The condition occurs most commonly in domesticated animals, especially ruminants and certain dog breeds.