A13-year-old Norwich terrier, previously limping and stiff, able to enjoy walks again. A toy poodle with epilepsy, finally relieved from seizures. In case reports, these and other dogs had their ailments eased with CBD — cannabidiol — after scant success with conventional treatments.

Evidence is growing that CBD, a non-psychoactive ingredient of cannabis, is potentially effective in treating various pet maladies, from pain and itching to seizures, says Chie Mogi, lead veterinarian of the Animal CBD Research Society in Japan, who has reported such cases in veterinary publications.