I am 48 years old, I should be available after 4:30 on weekdays and anytime on weekends. My family includes my English Bulldog (Kira) and a French Bull Dog (Lily Lulu), two kids (ages 7 & 5) and my wife of 19 years. I stay physically active with my job and would be fine with walking/jogging with your canine kids also, I can walk late at night if that fits your schedule. My wife and I raised and showed Great Danes and Dachshunds for 15 years so I am fine with the big guys and the small ones.. Over the years we have had every imaginable situation with our dogs so I am sure there will be no surprises while yours are in my care.