Perhaps no other herb has recently received as much attention in the media — or in the courts — as Cannabis sativa. With more countries and local jurisdictions moving toward legalisation for recreational as well as medical purposes, the use of cannabis in its many forms has expanded exponentially among the human population. As medical marijuana becomes more widely accepted and available, it’s no surprise that veterinary practitioners are increasingly asked to address questions about medical applications for nonhuman animals, while manufacturers are facing decisions regarding how to respond to customer demand. Jan Allegretti, the author of The Complete Holistic Dog Book: Home Health Care for Our Canine Companions overviews the use of cannabis in veterinary medicine.