I have two dogs of my own, a 13 year old and a 7 year old. They are both small dogs but I have also looked after a big 10 year old dog, a 5 year old big dog and a big 7 month old dog. Therefore I have a lot of experience. I love to sit around with the dogs and keep them calm but play with them too so that they stay happy. The duration of the walks would be as long as the owner would want