“Two Seattle veterinarians are pioneering the use of medical marijuana to treat pets. Dr. Sarah Brandon, co-founder of Canna-Pet, says medical cannabis can be used for many ailments plaguing your dog or cat.   “Cannibanoids control inflammation to reduce pain from arthritis,” she says. ‘They can help reduce anxiety.’   Brandon and her colleague Dr. Greg Copas launched Canna-Pet two months ago because citing that traditional pet medicines can have undesirable side effects.”