Should I be worried about Cloud's Knee/Leg? I was feeling his hind legs and I notice that both legs or knee (not sure) were making a clicking sound. I haven't checked his front legs yet. He's sleeping now. Anyone else has this problem? I'm assuming it's normal since he's only 10 mos and I dont think he'd have real problems until he got older.. Can you guys post the name of the joint vitamin thingy again and where you can get it. And is the vitamin you got made for humans or only dogs?