What does it mean when a scientist or conservationist talks about a subspecies? Well, what they are describing is a category in biological classification that ranks immediately below a species. In other words, a subdivision of a species. By definition, much of the wildlife that rank among subspecies are rare and endangered. But there are also some very common and domesticated creatures that are classed as being a subspecies.
Intrigued? Click through and admire these creatures that look the same, but are different.