i have had plenty of experience with dogs as small as french bulldogs to great danes. i am comfortable around any dogs and LOVE THEM. i adore going on nice long walks and live in an area where i have an abundance of choice to walk, so the dogs will be very happy :) I like to send photos and updates to the owner so they feel comfortable and safe that there dog is in the perfect hands !! I myself have a little french bulldog who is so friendly with any dog so that will not be a problem either. I live with my boyfriend a lot of the time and his house is also fenced for the dogs protection and safety. hope this reassures you :)