Why Does My Dog Throw Up Her Morning Breakfast. The exact cause is unknown and it can affect dogs of any breed or age. This means that your dog’s food had already started being digested before your dog threw it up.

Ibd develops for a number of different reasons. This is known to cause pancreatitis, which in its acute form causes severe vomiting,. If your puppy or adult dog has eaten something that is causing a blockage, throwing up undigested food is just one of many symptoms.