You know, I'm curious about this too. Jackson is 15lbs so bigger than Knox, but he is such a jumper. He's constantly going from couch to couch and he lays on the top of the couches like a cat, etc. He is a little over 2yrs old and no problems thus far but I know he's still young. I always get his knees checked every vet visit and we also did agility classes with no joint problems... but I often wonder if I should use some kind of supplement or if it wouldn't be worth it for a young, athletic, healthy dog. |