Ligers

FYI: Ligers are real animals, not just a sketch in Napoleon Dynamite of a creature bred for its skills with magic. They are, in fact, a cross between a lion and a tiger... not to be confused with a tigon, which is a cross between a tiger and a lioness.

But they are not yet a species, as they cannot reproduce. This—from what my scientist friends tell me—happens through speciation, the evolutionary process by which new biological species arise.

If you are reading this post and it makes sense to you, you need to drink more.