I have plenty of experience handling large dogs on leash as well as dogs others would consider 'unruly'. It requires loads of patience and compassion to form trusting bonds with dogs, and that's what I try to focus on first & foremost when starting a relationship with dogs to whom I'm a stranger. With a bit of love & patience they usually warm up to me pretty quickly, but if not it simply requires more time and gentle attention to earn their trust. On walks I like to include at least one visit to a nearby park so your dog can get the necessary mental stimulation as well as exercise. With your permission I'd try to socialize them with other dogs as well; making sure to keep a watchful eye on them at all times to ensure they remain safe and continue to enjoy the experience. I try to keep my walks to one or two dogs at a time, at most three, so that I can give your pup the proper attention and make sure they stay safe while out & about. I also make sure to have plenty of treats on me during walks to keep them happy and provide positive reinforcement for good behavior. (If your dog is on a diet or has any food allergies, please let me know and I will take that into account. I can provide alternative treats for those with allergies and other forms of positive reinforcement for those on diets.)