This is a really good question and has made me think.
When I first saw it, i thought 'no' instantly.
Then I realised I was a hypocrite
On reflection, yes, I would kill a puppy for a million dollars. I would probably eat it, have something made out of the hide or even stuff it. I know that sounds creepy but I would do this so that I always remember that I took this creatures energy so that I can be better off in some way. I would have to look the puppy in the eye and kill it myself, and then live with it everyday from then on.
This has made me think of a lot of different things. The majority of people that are wealthy are at the expense of the life and quality of life of other humans and animals. How many times have you mindlessly had a steak, chicken, burger, pizza whatever and thought about the fact that you are eating the life of another? Is a dog better than cows and chickens? Where is the money going each time you buy this meat? Probably some rich twat that is rich at the expense of everyone else. How do you know that your clothes, shoes, bags and other crap dont come from a sweat shop? Where are your savings invested? Rather than mindlessly making rich people richer and contributing to the chaos of this consumerism we should try and be aware of all the harm our purchases may be causing.
So if essentially if I profit by taking the life of this puppy I want to be able to do it in complete self awareness and with gratitude and acknowledgment to its spirit.
The only circumstance I would not kill this puppy is if it was someone's pet.