Link: Breeding Changes Dog's Brains

http://blogs.discovermagazine.com/80beats/2010/08/04/dog-breeders%E2%80%99-tinkering-produced-breeds-with-reorganized-brains/

Pictorial Argument For Not Always Obeying Your Genes

This is what happens when a dog programmed to hunt refuses to stop pursuing a porcupine!  Lesson: just because your genes say it's a good idea doesn't mean you have to do it!