I have been dog sitting for 4 years for my friends and neighbors. I have a very friendly 4 year old Yellow Labrador named Dolce that's 75 lbs. Dolce has never had any issues with getting along with other dogs. I go running with my dog for 15 - 30 minutes daily depending on the day and take him to the dog park that's 5 minutes away for an hour daily. I can do both for your dog also. I love and have taken care of dogs of all sizes! The only reason why I have excluded giant dogs is because I live in an apartment and don't think the space would be accommodating for the dog. If needed, I can certainly take your dog out every 2 - 4 hours. Available during the weekends listed on the calendar.