Bloat is also known as gastric dilatation and volvulus. This is the medical term for bloat. This word pretty much means that the stomach has become enlarged, flipped over, and twisted on itself — this cause and obstruction of the outflow and sometimes intake of the stomach.
Bloat can occur in many different ways, what most commonly happens is if your dog eats and drinks to quickly and swallowing air as they do or exercising too quickly after.
Once your dog's stomach has twist causes, your dog's stomach will become distended. You will notice that the belly has become swollen. This usually happens very quickly. Bloat is very common in deep-chested dogs such as German shepherds, Standard poodles, and Great Danes.
A bloated dog needs to go to the veterinarian as soon as possible. Due to the high-risk factors, this is usually a life-threatening emergency because of the blood flow that gets cut off from the heart and stomach lining. Bloating will also cause a blockage in your dog's GI tract, which can be very painful.
While there are other things that could cause your dog's stomach to become distended, such as pregnancy or heart disease, it is better to make sure as soon as possible. If you notice your dog's abdomen becoming swollen, seek veterinary care immediately.