People with disabilities use various assistance devices to improve their capacity to lead independent and fulfilling lives. Service dogs can be crucial lifesaving companions for their owners. As the use of service dogs increases, nurses are more likely to encounter them in healthcare settings. Service dogs are often confused with therapy or emotional support dogs. While some of their roles overlap, service dogs have distinct protection under the American Disabilities Act (ADA). Knowing the laws and proper procedures regarding service dogs strengthens the abilities of healthcare providers to deliver holistic, patient-centered care. This article provides background information about use of dogs, and discusses benefits to patients and access challenges for providers. The author reviews ADA laws applicable to service dog use and potential challenges and risks in acute care settings. The role of the healthcare professional is illustrated with an exemplar, along with recommendations for future research and nursing implications related to care of patients with service dogs.