An attack of gastric dilatation volvulus almost kills him, but he recovers.

Gastric dilatation volvulus (Standard)

Gastric Dilatation Volvulus, commonly called "Bloat", is another serious condition that affects many of the large and giant breed dogs, particularly those with deep chests.

In dogs bloat or gastric dilatation volvulus (GDV) is a common condition where the stomach fills with gas and commonly twists.

Great Danes have some health problems that are common to large breeds, including bloat (gastric dilatation volvulus(GDV)).

Once the dog is discovered to be sick, the family rushes him to the hospital where they learn that he needs an emergency operation to cure gastric dilatation volvulus which will cost $750.

Life is good until Marley begins to have arthritis and deafness and develops an attack of gastric dilatation volvulus though he survives it he has another attack and it was clear that surgery would not help the situation, John has Marley euthanised while beside him.