I'm so glad you were able to save Spirit !!! I know Kilo must be so jealous with a new dog in the house! I used to have four dogs in my home, 2 males, the other two females. The males would sometimes get into horrific fights (with the older but much lighter in weight male dog) winning.
At one point in my life I had four dogs, the two older males died at 18 years old (shiz tzu's) and the two younger females died at a young age, one from a stroke and one from cancer.
We were absolutely heartbroken and would volunteer at our local Humane Society to walk the dogs that were up for adoption. One dog couldn't be walked "Huelett" who had note on his door that he had been extremely abused. We have a horrid ghetto street by the namne of Huelett Street that I feel certain this dog came from. This dog, after a time, would move from his indoor place to the outdoor place and watch my daughter and I. I have always, all these years later, felt REALLY guilty that we didn't take this dog. Instead we bought a rat terrier puppy from a pet store in the mall.