I love my dog very much. He is a a better than perfect example of his breed (old english mastiff). Sadly, due to my intervention, he was never able to reach sexual maturity. I often think about cloning him. I know that it would not BE him. I think that I would like to see my dog raise his child and have the puppy as a companion after he's gone.
As far as 'playing God' goes, we have altered the lives of animals (not just pets) for our entire existance. What is the differance between cloning, reproductive assistance (in humans), and birth control pills?