I believe a mandatory 7-14 day limit on opiates is highly impractical for many feline patients due to behavior/anxiety with transport out of the home environment or for large dogs with serious mobility issues.  The drug I see this most referring to would be buprenorphine or tramadol for chronic pain conditions.   In general I have a very good grasp on those particular cases who get larger prescriptions at a time and pay attention to the timelines for amounts prescribed vs. refills ordered and have not gotten any feelings of diversion from my personal experience with our clients.