Hi! Yes, you’re right such animals exist. They are called emotional support animals (ESAs). Tbh, I used to have one when I had a bad anxiety issue. It was 2 years ago. So, my wife found me a dog. Btw, she found it here
https://www.esaregistration.org/faq/. This is a website where you can register your animal as an ESA or find an animal to support you. So, the dog I had was called Jacky. He was actually handsome. And, you know, I was so busy strolling with him everyday that I just forgot about my anxiety. That was a really surprising effect because I had been to some psychologists, and they didn’t manage to help me. So, that’s why my story.