Hello KJC and thanks for your reply.
Bloodwork is a great idea, I didn't think about it, thanks.
The last one we did was two years ago, so I guess an update will be a good way to check his status.
Do you have any advice regarding general maintenance (as in things that are not necessarily detected by bloodwork, like joints ie) ?
I am really interested in glycoflex, glucosamine or any healthy supplement that can do good to him. Anyone with good experience on these want to share ?
Thanks a lot