Service dogs have had a place in American healthcare for almost 100 years. While companion animals were relatively common in European mental institutions during the late 19th century, dogs were not incorporated into American therapy settings until 1919.  Guide dogs for the blind began being trained in the United States in 1929, after World War I left many veterans without their sight. Though the use of service animals expanded after World War II and the Korean War, it wasn’t until the Americans with Disabilities Act of 1990 that people with assistance dogs were guaranteed access to businesses and services available […]