The central idea behind probabilistic theories of causation is that causes change the probability of their effects; an effect may still occur in the absence of a cause or fail to occur in its presence.
Causes, Diagnosis, Treatment, and Management of Acute Vomiting in Cats. Cats will commonly vomit from time to time, often because they might have eaten something that upset their stomachs, or simply because they have sensitive digestive systems. However, the condition becomes acute when the vomiting does not stop and when there is nothing left in the cat's stomach to throw up except bile.
Hematemesis in Cats. Hematemesis, or the vomiting of blood, can affect a wide range of systems, depending on the source. The gastrointestinal system may be affected due to trauma, ulcer, inflammation, or the presence of a foreign object.