Hill's Prescription Diet - Dry Dog Food - Canine j/d Mobility Care - 8.5LBSOverview: Improving your dogs mobility is as easy as feeding the right nutrition. Being proactive about mobility issues early can avoid the need for more aggressive treatments. Hill's Prescription Diet j d helps your dog walk, run and jump more easily. Key Benefits Prescription Diet j d is formulated with the following benefits: Help improve your dog's ability to run, walk and jump in as little as 21 days with a clinically proven combination of