Our dog Bruno, a mutt we rescued at three years old from a shelter, was a joy. His previous years were a nightmare from what we were told. Aside from being a bit timid, he loved everyone from people to dogs to cats. Never barking unless the doorbell rang. Didn't jump up on or chew furniture or our stuff.
They say rescue dogs truly know what you have done for them. It would be difficult to deny it based on our friend's behavior and companionship. He will be missed.
R.I.P. "Mr B"