I have been a patient to anxiety for about 2 years now. Its been a long journey for me and my family. I got a terrier about 3 months back. And it was like life took a new turn. From a place where I had isolated myself to now being able to meet new people and be much more calmer and relaxed than before, it's been a hell of a ride. In just 3 months. Never knew a dog could be the medicine I needed. So, yes dog does help in treatment of anxiety and depression.