There are a total of four known trenchant patterns for the Tabby cat when it comes to their fur. The four different types of Tabby patterns are known as the mackerel, the classic, tickled, and spotted. There is a fifth pattern but it is not as common. The fifth pattern occurs when one of the four basic patterns meshes with a patched pattern which can be found on cats such as the Calico and the Tortoiseshell. This type of fur pattern is known as the “Patch Tabby“, Caliby, or the Torbie. All of these patterns whether rare or common, have been found in randomly bred groups as well.