I don’t have professional experience but I do walk my dogs everyday as well as my girlfriends lab which is a pain to walk. I’ve also experienced a dog that is literally uninterested in walking but once the frisbee came out we threw it around and played catch. I personally don’t think you need experience for this at all it just requires love, attention, and staying positive. I am willing to walk any type of dog and to play around if it be my backyard which I would say is a decently sized, definitely enough for multiple dogs to play around all grass and no pool plenty of room for play. As for walks whatever is requested from the client I am willing to do even if it doesn’t relate to walking, if the clients requests something for me to do with the animal I will.