Pancreatitis literally means inflammation of the pancreas, the glandular organ that secretes enzymes needed to digest food. When something causes these enzymes to be activated prematurely, they can actually begin to digest the pancreas itself, resulting in pain and inflammation. Pancreatitis occurs in two different forms, acute and chronic, and both may be either mild or severe. Acute pancreatitis occurs suddenly and is more often severe, while chronic pancreatitis refers to an ongoing inflammation that is usually less severe and may even be subclinical (no recognizable symptoms). Acute pancreatitis can be extremely painful, and can become life-threatening if the inflammation spreads, affecting multiple organs and systems. Symptoms commonly include anorexia (loss of appetite), vomiting, weakness, depression, and abdominal pain. Abdominal pain in a dog may be exhibited as restlessness or not wanting to move; a hunched appearance or a praying position, with the chest down and the rear raised; or vocalization (crying or whimpering). Additional symptoms may include diarrhea, drooling, fever, and collapse.