Should medicinal marijuana proponents give pot to their pets?

FOX's Tom Rigatti reports, probably not: 

As more states legalize marijuana, more pet owners are giving medical-cannabis products to their furry companions to treat a range of ailments.

Well, veterinarians say there isn't enough scientific data to show that cannabis is safe and effective for treating animals.

Medical marijuana is legal in 28 states, but remains illegal under federal law, so there's been little research into its potential health benefits for people or animals.

Despite the lack of scientific data, many pet owners are convinced cannabis has improved their animals' health and well-being based on their own observations.

Tom Rigatti, FOX News.