Has a grandparent ever told you about the joys of having grandchildren? It usually sounds something like this: "You get to spoil them to death, and then give them back to their parents when they start acting up." Well, the same goes for dog walking. If you love dogs, but haven't taken the plunge of owning your own, dog walking is for you. Did you know people will actually pay you to play with and walk their pets? So instead of spending money on getting your own, you could be making money taking care of other people's. Most dog walkers charge between $10 and $18 per walk, depending on location and number of dogs, and overnight dog sitting can cost even more [source: Rochelle]. It's best to start your services with people you know -- and who trust you -- because it is a big responsibility to take care of someone's pets, so offer to sit for your friends and coworkers. Once you've established a small roster of clients, ask them to recommend your services to their friends and coworkers. If things go well, you might even be tempted to make this your full-time gig.