Pot for pets? It may be the next step in the ever-evolving legitimization of medicinal marijuana, and a trio of South Florida companies are competing to become the Blue Apron of cannabis oils for pets. Three companies formed in recent years are selling cannabidiol (CBD) products that owners and enthusiasts claim might be more effective than traditional veterinary medicines at treating chronic pain, inflammation and anxiety in dogs and cats. But their growth prospects face a big hurdle: While early research suggests that the treatments show promise, the legality of the products are widely disputed, preventing pet owners from buying them at their favorite chain pet store or through the most popular e-commerce sites. That hasn’t stopped Delray Beach-based Prana Pets, Plantation-based King Kanine and Fort Lauderdale-based Diamond CBD from joining a growing number of new companies around the globe that promote and distribute CBD oil products, including oral liquids, chews, balms and spra..