Hi Nicole, I just got into my MSW program so my experience is not as a professional. I have worked with Delta, the Organization that trains dogs and handlers to go into hospitals, etc, to offer comfort to people. Maybe you should start there? Delta also uses other animals like llamas, ponies, even cats. I just heard about a program here in CA that helps foster kids train shelter dogs and people can volunteer to coach the kids to use positive reinforcement. Eventually I want to use my dog in my work as an MSW, so I think we are thinking similarly I was doing research a little while ago and saw that after you get a degree in social work, psych, or counseling, you can get a certificate in animal assisted therapy. I can try to find the information if you want.
Take care!