Examples of artificial breeding?

Artificial breeding is the purposeful manipulation by man to select two organisms with desired traits and mating them, hoping to produce offspring with a desired set of traits.  Examples of this abound in the animal world, for example, all the purebred dog breeds are examples of specific sets of traits or skill sets that were prized, valued, and developed by dog breeders.  Race horses are another example in the animal world, where a champion race horse can charge quite a price for stud fees, all in the hopes of birthing the next Kentucky Derby winner.  In the plant world, corn is a good example.  The native Mexican plant corn was artificially bred from would be unrecognizable in most grocery stores today.  It was a smaller eared plant, about the size of a mans little finger, with small kernels that fell from the cob easily.  All the different types of roses are another example of artificial breeding, bred for their structure and color.