Hydration is key for joints!!!
I personally injured my spine and got advise on hydration being key. It completely worked so immediately started adding water and some "unflavored pedialyte" about 1/3 to water to my dogs meals a couple times a day. I give water with food at every meal now as well. The changes along with the continued hip and joint supplements was major. You have to figure your joint fluid is mostly water. Dogs never hydrate properly and house dogs will refrain from drinking water.
Please repost and pass along. It is major and I never see anything on it out there