look up dog walkers in your area and base your charge on what others are charging for similar services.
since you said getting into dog walking I m assuming you d be doing it for pin money and only within your neighborhood. If you know the neighbors I d say in general conversation ask them if they need someone to walk their dogs, and if they smile and say ok (and ask what experience you ve had doing that, i.e. if you ve ever had dogs before, how long, etc.) and they say they d like to hire you then ask them how much it would worth for you to walk them daily 7 days a week...and go from there. If you don t have a real business (have a license, an accounting system set up and a plan) then you can t tell them what you want to charge, you need to ask them what it s worth to them. Remember that walking dogs could get dangerous if you run up against an unleashed dog in the neighborhood who wants to play or charge the animals you have on a leash so you would need to know ahead of time what you can and can t do and what you should do to protect them and yourself. Here where I live we need to watch out for aligators, but in normal places you d need to watch out for cars, check for good leashes and be sure that the dog or dogs can t overpower you in strength (by them running from you). I would suggest too that you have insurance for yourself in case you get bit. Some people these days require contracts so you might want to look at a few and determine if it suits your business or not.