We Have a Winner

 

The correct guess was To Become Whole in Land and Soul. However, having learned from my first book, as you can see, I've changed the name.

Here's the blurb for the back.

When Slave Master Patro first laid eyes on the child’s ice-blue eyes, he knew he would be the most sought-after slave on the market. The fact that he didn’t seem to be able to talk was a minor frustration.

Canis couldn’t tolerate the collar though. It not only contained his body, it strangled his soul. When this turmoil turned dangerous, Patro agreed to free the boy, but there were conditions, conditions Canis couldn’t hope to meet, not if he wanted to be truly free.

Once again, for an awesome cover of your own for a great price, see Candice Bowser. She's just awesome.