I have done In-home dog sitting in addition to Home cleaning in the past. I have owned dogs all my life and have experience with puppies. I volunteer once a week to walk Dogs at Greenhill Humane Society and can handle Dogs with Reactive, shy or hyperness issues as long as I am 1:1 with them on Walks. I have handled dogs as small as Chihuahuas and as Large as Great Danes. I prefer using a Harness instead of or in addition to a collar for walks due to increased control, better comfort for the dog and less possibility of Choking the dog or escapes by slipping out of a collar. If you do not have a harness I will need to assess your dog's ability and willingness to be handled before walking them using only a collar.