Two subspecies of crow. The left one is Corvus corone cornix; the picture was taken in Helsinki. The right one is Corvus corone corone; picture taken in Brussels.

Subspecies is a classification (taxonomy) in biology. It is directly below species. When looking at the Latin name, subspecies are indicated by the third name. Subspecies can mix with each other; animals or plants from different subspecies can have offspring together (This is usually not the case with animals from different species).

When looking at subspecies, they can also be told apart sufficiently by looking at the appearance or DNA of an animal or plant.