Gastric dilatation and volvulus syndrome (GDV) in dogs is an abnormal accumulation of gastric gas (dilatation). which may be complicated by rotation of the stomach (volvulus) about its mesentric axis. A number of factors. both environmental and host have been implicated in GDV. https://www.jmannino.com/mega-pick-Royal-Nomadic-5413-Rug-Ivory-Black-limited-super/