Dear Joe,
Please don't misunderstand me. Sarcastic? Absolutely. You are a very new member here. And the first (Second?) thing you post comes across as absurd. And yes, I did not realize you were not talking about actual dogs. To then add to this that you do not want people to respond unless they have experience triggers a switch. If you have looked around on the forum, I am sure you have realized how many oddball questions pop on this forum. And I do hope you then also realize that I am here to help people, assuming they are open to receive input.
So.. I do not have experience with Sabina. I do however have quite a few other Juniper species, and I have found they are not easily convinced to grow new roots. Seems the main requirement is to have an active lifeline (So existing roots further down). From the pictures it is unclear, but this seems to be the case. Layering could work, but I would be concerned with a more mature specimen such as yours might not survive.
In your situation I would first assess the roots in the pot; Maybe you do not need to grow new roots: Have you had the tree out of the pot yet?
Second, consider a tourniquette just below the spot you would like new roots. Then pot in a well draining substrate, and lit it go for a year or two.