I was always told to get an elevated bowl for big dogs to help with digestion, lessen air intake, and reduce issues for gulping food etc. needless to say we have raised feeders for all dogs all at a lower level so dogs head still goes down into bowl not even with their head. I order mine from amazon... I have 4 of this kind... "Orbit innovative 2 qt raised feeder B204 in oak". It comes in oak, mahogany and black.
You can get many types of raised feeders at any pet store, some even have storage under them for dog food. As well as big lots or ocean state job lots of cheaper ones as well.
Lexi- GSD/Bull Mastiff
Calvin- poyldactyl cat