There are many different Anchat subspecies, and each subspecies has subspecies of its own. Think of it like how there are canines, and then there are dogs and wolves, and there are different kinds of dogs and wolves. It works the same way for Anchats. There are Anchats, and then different subspecies, such as Desert and Fair Folk, and each subspecies has sub-subspecies (which can either be called sub-subspecies or breeds, depending on how confusing you want to be), Desert's being Sahara, Coastal, and Tundra.
As mentioned in the MYO guide, each breed is a different rarity. There are Common, Uncommon, and Rare breeds. Common breeds are free to