I use Joint Aid for dogs
http://www.gwfnutrition.com/but you can get it cheaper here
http://www.jointaid.co.uk/products.aspIt really does work, I certainly notice a difference if my 10 yr 7mth Boxer misses
her daily scoop.
Since reccomending it to a friend who has retired ex working gundogs (ESS) she uses
it on her very arthritic boy who since has made great improvements (prior to this she was thinking
she'd have to consider PTS).