But veterinarians say there is n't enough scientific data to show it 's safe and effective for animals .
As more states legalize marijuana , pet owners are giving their dogs and cats cannabis to treat everything from anxiety to arthritis .
Veterinarians say there is n't enough scientific data to show it 's safe and effective for animals .
As more states legalize marijuana , pet owners are giving their dogs and cats cannabis to treat everything from anxiety to arthritis .