Let's not forget, mankind has been genetically engineering various species for many thousands of years. We're just better at it now. We've cross-bred dogs to

Let's not forget, mankind has been genetically engineering various species for many thousands of years. We're just better at it now. We've cross-bred dogs to get the desirable traits. We've domesticated animals through breeding. We've cross-bred plants to get pretty flowers or tasty (or hearty) fruits and vegetables.