I just wondered if anyone had any experience with older labradors. I have had 2 arrive today for dog sitting. The owner told me that they generally have 3 15 minute walks a day. This seems very short. Although I have taken them for 2 of those already and they are now fast asleep. Do you think I should try and go a bit longer? I'm used to longer walks (being a dog walker/sitter) but have to be honest I do feel quite happy about having a break from all the exercise. The most important thing to me is that they are happy. Is this amount of exercise normal for their age?