Body conformation seems to play a role.  It seems to be more common in dogs with deep and
narrow chests.
Having a close relative that has bloated (parent, sibling or offspring)
Statistical analysis showed that dogs fed with raised bowls actually had a higher rate of bloat.
Older dogs (7-12 years)
Dogs that eat fast
Lean body condition
High anxiety personality (fearful, nervous, aggressive)
Stress (boarding, travel, disease, etc.)
Males tend to bloat more than females
Exercise after eating has long been implicated, but was NOT shown to be a factor in studies done
by Dr. Glickman.
Feeding only dry food
Feeding one large meal a day, rather than splitting the food into 2 meals or more
LLC
It's still pretty much a mystery on why dogs bloat.

The most publicized bloat studies were done by Dr. Glickman in the 90's.   This involved
statistical analysis of almost 2,000 dogs.

It does appear to be mostly large dogs that are affected, but it can occur in any breed.
Some of the
more common breeds reported to bloat are:
What Causes Bloat?
Risk Factors
German Shepherd Dog              Wolfhound
Standard Poodle                        Bloodhound
Weimaraner                              Irish Setter
Saint Bernard                            Akita
Golden Retriever                       Boxer
*** Great Dane ***
Adding water to dry foods that contain the preservative citric acid
Feeding dry foods with one of the first four ingredients being oil or fat
Restricting water before or after a meal

Factors that may decrease the risk of bloat:
Adding table food or canned food to the diet
Diet that has one of the first 4 ingredients containing a calcium-rich meat meal product (meat, fish
or bone meal)
performed.  This is where the stomach is surgically tacked to the body wall of the abdomen.  It
will not prevent gas bloating but should prevent the stomach from twisting.  This procedure can