Hopefully. My aunt has rescued so many dogs that they have altered the last few for free. Out in the country a whole lot of dogs just get dumped off, especially by the dumpsters at the very end of our road.
What I did to tame them was simple enough, I fed them. I put the food down at a certain time and started sitting back a good fifty feet or more before they would come and eat it. Over time they got use to my presence and I would inch closer and closer until I was able to sit right next to them. Then I worked on touching and petting them. It was a big old patience contest but by the end they all knew me and would let me pet them.