Besides treating and reducing inflammation, some people believe that CBD can actually prevent the onset of arthritis in dogs. The theory goes that as the body begins to produce more of the "good" compounds, such as endorphins, that it can reduce pain and inflammation in the body. This may very well be true, especially since the CBD doesn't increase the levels of these compounds in the same way other medications do. It is however important to talk to your vet regarding the benefits of adding CBD to your dog's diet, as there may be side-effects to do so.
https://dailycbd.com/en/best-cbd/oil-for-dogs/arthritis/