North America
Animals:
To date, there are no regulatory approved medicines for companion animals using cannabinoids derived from the medical cannabis plant in North America.
CannPals lead drug candidate, CPAT-01, is in development as a pain and inflammatory control for dogs containing cannabidiol and tetrahydrocannabinol, and CannPal is seeking to open an INAD with the FDA/CVM to allow for the legal sales in the United States and Canada.
Only California and New York have passed legislation to allow veterinarians to discuss cannabis with pet owners and veterinarians should check with their federal animal health regulator prior to discussing any of the approved human medicines with pet owners in Canada or any of the other states and territories below.
Canada:
On 17 October 2018, cannabis, or marijuana, was legalized for persons aged 18 or older in Canada for recreational purposes. It was already legal for medicinal purposes, under conditions outlined in the Access to Cannabis for Medical Purposes Regulations (ACMPR) issued by Health Canada, and for seed, grain, and fibre production under licence by Health Canada.
However there are limitations on the type of cannabis products that are legal for production and/or sale, which include limitations on additives to the finished products.
United States, Districts and Territories:
At a federal level, cannabis is still a schedule 1 controlled substance and illegal prohibiting even its medical use, however thirty-three states, 4 territories and the District of Columbia currently have passed laws broadly legalizing marijuana. Additionally, 10 of those states and the district of Colombia, have legalised recreational cannabis use and a number of other states have some form of legislation for low THC cannabis.
States, districts and territories with some form of medical cannabis legalisation
Alaska (medical & recreational)
Arizona (medical)
Arkansas (medical)
California (medical & recreational)
Colorado (medical & recreational)
Connecticut (medical)
Delaware (medical)
Florida (medical)
Georgia (CBD Oil less than 5% THC)
Guam (medical)
Hawaii (medical)
Illinois (medical)
Indiana (CBD oil less than 0.3% THC, legal for any use)
Iowa (cannabis oil less than 3% THC)
Kansas (CBD oil containing 0% THC, legal for any use)
Kentucky (CBD oil only)
Louisiana (medical)
Maine (medical & recreational)
Maryland (medical)
Massachusetts (medical & recreational)
Michigan (medical & recreational)
Minnesota (medical)
Missouri (medical)
Montana (medical)
Nebraska (medical)
New Hampshire (medical)
New Jersey (medical)
New Mexico (medical)
New York (medical)
North Carolina (CBD oil only)
North Dakota (medical)
Northern Mariana Islands (medical & recreational)
Ohio (medical)
Oklahoma (medical)
Oregon (medical & recreational)
Pennsylvania (medical)
Puerto Rico (medical)
Rhode Island (medical)
South Carolina (cannabis oil with less than 0.9% THC)
Tennessee (cannabis oil with less than 0.9% THC)
Texas (CBD oil only)
U.S Virgin Islands (medical)
Utah (medical)
Vermont (medical & recreational)
Virginia (cannabis oil with less than 5% THC)
Washington (medical & recreational)
West Virginia (medical)
Wisconsin (CBD oil only)
Wyoming (CBD oil only)
District of Colombia (medical & recreational)
Sources:
https://en.wikipedia.org/wiki/Cannabis_laws_of_Canada_by_province_or_territory
http://www.governing.com/gov-data/safety-justice/state-marijuana-laws-map-medical-recreational.html
https://en.wikipedia.org/wiki/Legality_of_cannabis_by_U.S._jurisdiction