Yes, in New York City this is a job that can pay your rent. There may not be a thriving dog walking economy in your city of choice, but every city has a job like this. Pay attention to the idiosyncrasies of the local economy and see if you can take advantage of it. In fast-paced cities, you might be able to make a lot of money based on the fact that people don't have very much time. I know guys who pay their rent in New York City by walking dogs for four hours a day. I also know guys in New York City who have to work two jobs that are far more difficult than dog walking just to make ends meet. Study up on supply and demand and you might just find that you can make a lot more doing a lot less.