(This is Belle in her Halloween costume!) I have been using elk velvet for my 11 year old golden retriever for a month now. She has severe arthritis as well as weakness in her hind legs. She is on several prescription medications as well. The elk velvet has made a difference in her mobility. Although nothing will make her like a puppy again, she does get around much easier now. And I love the fact that it is all natural. I hope to see continued improvement in her mobility.