>>342664this is untrue. Bloat can occur most likely when you let your dog excercise immediately after it has eaten, if you feed it a lot of dry food without first letting it get "soggy" in water (have you ever seen how dry food reacts to fluid? Imagine if that happens in the dog's stomach..), and giving it food in large portions once or twice a day instead of lesser portions and multiple times spread over the day. Also, make sure it doesn't drink large amounts of water at once. Then there are some breeds that are more prone to bloat then others. Shepherds are one of those.
A dog that's suffering from bloat will indeed vomit, or try to, and its belly will get unnaturally big. If a dog suffers from these symptons you should get to the vet asap for surgery. If you're quick enough, your dog can be saved.
I'm sorry anon.