Vets like most doctors are eager to learn about products that can benefit their patients. If you are interested in looking at CBD or full plant Cannabis products for your pet its best to go to your Vet with some information and a question as opposed to a demand.
There are peer reviewed medical studies that are in existence that you can employ to do just this.
The idea is that you 1) find a study that shines light on your particular area of interest and print it out for your Vet to consider and 2) Ask them to review the findings so that you can come back to the issue at your next visit.
While it can be frustrating to have a pet with a condition that is impacting their quality of life it is best to move forward with the support of your practitioner. This means giving them the opportunity to study the issue for themselves so that they can process the information on their own time and be open to an exchange of information and ideas moving forward.
Studies for epilepsy and arthritis can be found here:
For information about CBD and anxiety you’ll have to share human studies as there isn’t much scientific research on the animal kingdom and cannabis therapies. Suffice it to say we as mammals share similarities in that we all have endocannabinoid systems and cannabis directly interacts with that endocannabinoid system. It is a logical assumption that if Cannabis therapy works for humans it may work for other mammals taking dosage and administration of said cannabis derived treatment.
A resource we like for learning about pets and cannabis is Canna-pet. While they are an american organization their intel is universal. Check it out!