The African Wild Dog species is an intriguing one which long ago mated with another species to help create the many hundreds of domesticated dog species we know and love today. These days, however, the African Wild Dog is its own genus and species, and it cannot breed outside of this genus / species. Moreover, it is not a dog as we know it.
There are basically five subspecies, or types, of African Wild Dogs: the Cape Wild Dog, the Chadian Wild Dog (or Central African Wild Dog), the East African Wild Dog, the Somali Wild Dog and the West African Wild Dog.
The astounding amount of fur colors and patterns would be difficult to discuss here. Suffice it to state that while there are some basic patterns (such as a black muzzle) and there are some common aspects respective to geographic regions (predominantly black coats in the north-east while those in the south have brighter-colored coats). On top of all that, however, is the fact that no two African Wild Dogs look alike; each of these wild dogs has a unique pattern.
The Somali Wild Dog is the smallest of the five variations, the East African variety is a bit larger (but still smaller than the median size), and the Cape Wild Dog is the largest of them all. The other two subspecies, the Chadian and the West African Wild Dogs, are the median size.