My chihuahua Castle is 9 years old this year and has IVDD. I'm looking for a good joint supplement for him to help with his aging bones and hopefully put more zip in his step. There is so much on the market these days I thought it might be helpful to ask other chi owners what they've used and what worked for them. Other than IVDD he has no other issues except that he only has 12 teeth so I think a soft chew would be easiest for him but I guess if a tablet was small enough he could probably eat it ok since he does chew his dental snacks. Thank you for any help anyone can provide.