Study Design: A three-year prospective randomized study is proposed which has two randomized arms. Arm one of the study will be Veterans (n=110) randomized to receiving a Service Dog, which has been trained for specific tasks to assist with the Veteran's disability. Arm two (n=110) of the study will be Veterans randomized to receive an Emotional Support Dog (a dog which provide emotional comfort). All Veterans, after confirmation of eligibility will be randomized to receive a Service Dog or Emotional Support Dog and will be observed a minimum of three months. During this period, Veterans will be required to participate in a Dog Care Course to ensure they are aware of the demands dogs place on humans. Once dogs become available, Veterans will be paired with a Service Dog or Emotional Support Dog. Follow-up will begin at one week post pairing to track any dog behavior issues, and will continue after pairing for 18 months. Primary outcomes to be examined include limitations on activity (as measured by the WHO- DAS 2.0), quality of life (measured by the VR-12). Secondary outcomes include PTSD symptoms (measured by the PCL), Suicidal ideation (Columbia-Suicide Severity Rating Scale); depression (PHQ-9) and Sleep (Pittsburgh Sleep Quality Index). In addition, health care utilization, anger management, employment and productivity will also be examined. This multi-site study will be conducted at three locations, Nationwide.