In this Wednesday, May 24, 2017 photo, Rafael Moreno, left, holds Sven's paw with his mother Irma Moreno, center, and Child Life Specialist and Facility Dog Handler Britta Carr, right,, in Omaha, Neb. Sven, a two year old golden retriever, works 40 hours a week at Children's Hospital in Omaha helping patients with exercise, comfort and demonstrating procedures. (Sarah Hoffman/Omaha World-Herald via AP)