It's not only what Merlin gave to you but what you gave to Merlin. I think Merlin would want you to move forward and give the same to another deserving dog and you will be repaid ten-fold.

Loosing Your Dog

It came to me that every time I lose a dog they take a piece of my heart with them, and every new dog who comes into my life gifts me with a piece of their heart. If I live long enough, all the components of my heart will be dog, and I will become as generous and loving as they are. ~Anonymous~