Felix from Proving Ground has been amazing with my 7 year old stubborn rescue. He is a border collie mix, so his age doesn't affect him and he still acts like a puppy. I am about to move across the West Coast into an apartment, so I needed to make sure my dog would behave OK in his new environment. After a few sessions, he immediately had more respect for me, and I could really see this difference from his training. Felix was also available nearly 24/7 to answer any questions I had about using the new tools and behavioral tactics. I was a bit scared at first, but Felix stuck with me through it, and I now have a much more well behaved dog. I'm so glad I went to Proving Ground for help, and I would recommend it to anyone.