I'm not sure I understand completely, but I'll do my best to answer.
About 7 years ago, we rescued a dog we found on the highway. Either someone had let her out or she was thrown out of a car. She was literally rolling down the highway, an 8 week old pup. She had a broken hip and abrasions all over, but we nursed her back. She's a black lab named Emma. She was such a rambunctious pup, but is now turning into an irritable old woman. She is hilarious how she acts sometimes.
The dog who was run over was Whiz, so named because he literally pissed on everything. He was a boxer and something mix, small, but crazily athletic. Coolest dog in the world, in my opinion. He was a few years old and I had gotten him from my grandparents because he was kept chained up and I thought he deserved more freedom. Not more than a month after I took him, a car ran off the road and took out the area that he had been chained at. So, at least I gave him freedom he never had and a little more time to enjoy it.
I haven't gotten another dog and I probably won't for awhile. My parents have tried, but I refuse. That little guy can't be replaced.