Walker Needed For 2 Dogs

I have 2 Dobermans. One is 4 yes One is 9 months The 4-year-old female is extremely obedient, smart, dominant , overly loving and loves, loves to play Frisbee or catch.. The 9-month-old male... Ugh! Very smart, very very high energy, doesn't know how to play catch because he chases sissy. Has been fully trained and needs to be on his shock collar. Not mean, overly friendly he's a licker. They been home with me all summer on an acreage and we have moved to 1//3 zcr Just srarted a new job and they are booored.