I walk two dogs – a small, easy 5-minute dog and a large handful dog I walk for a 1/2 hour. I get paid twice the amount of the small 5-minute dog…the big dog is a big handful, but all bark and no bite. We’ve tried Gentle Leader and different collars, but nothing seems to work, and I’m tired of trying. Both are very sweet, but walking the large dog just isn’t fun anymore; it’s become a real chore for me. I’ve been exploring interests in other activities and it’s a pain to schedule this long walk around it. It takes a lot of energy to walk such a large dog – most of which I cannot give after a 6-hour, stressful school day. I really just don’t want to walk her anymore. The only problem is her owners are elderly and really like me; they’ve become rather attached. How should I break it to them? How much notice should I give them? Please help me!