Depends on the season for me. In the summer, Tango gets one or two jogs and atleast one walk daily. Her walk/s also consist of off leash retrieving/runnning/obedience practice time aswell.

The others get a walk whenever I feel like taking them, usually they all get atleast one a week though from me. However, I don't consider them mine and my mom knows/understands it's not my responsibility to take her of her dogs' exercise needs and such. In fact, both of my parents prefer me not to take them for walks or anything and they've told me that. They do play outside with eachother all the time though..