I am recently familiar with this- I work at a feed n seed with a healthy dog/cat department that I manage and we have a limpy old school farm dog who is the resident dog. He was born bow legged and eventually blew out his acl in both sides and my hippy boss man takes him to therapy and massage and used to put him in a daily harness and he is on naturopathic medications/supplements- anyway, a lady down the street just opened up a dispensary and brought over this article about a dog going through cannabis based treatment, it was interesting. I am surprised it would be available for open ended ordering though as the laws (at least in my state) need some pretty clear definition of medical eligibility. Not my cup of tea these days but it is fully legal for recreational use twenty minutes across the bridge in Washington. Here is a link to the article:
CHARLIE: Humboldt Dog Gets Cannabis Cancer Treatment - DOPE - Defending Our Patients Everywhere - Medical Marijuana Magazine
I will note, it is in a magazine called 'dope magazine' (sure seems to damage the legitimacy of the medical movement with a name like that) but copies of it are plastered all over my works billboard and my bossman is now an enthusiastic participant.
I'll let you know how it goes...