Dog had an injury so regular walks are out of the question. More of an arthritic thing on one of his front legs so consistent walking or running agitates it. He is part of pair that was at a rescue ranch for a couple of years. Smart dog and was trained somewhere along the line. Build up energy manifests itself with anxiety. Gets really bad separation anxiety from my wife. When my wife comes home he has a complete meltdown. I really feel like if he knew how to play (fetch, etc.) we could work energy out of him without flaring up his leg issue. Hope all of that made sense. Any help would be much appreciated. Thank you for your time.