Simple SummaryModern zoological facilities have an ethical responsibility to focus on animal welfare. This includes a commitment to the continuous improvement to the care of the animals as well as responding to animal welfare concerns. A modern zoological facility should have an animal welfare program that includes both proactive and reactive measures in place to focus on animal welfare. Examples include adequate staff training, an animal welfare committee, and an assessment process that monitors every individual in the collection. Improved scientific understanding, institutional standards, and public opinion have all pushed the field of zoo animal welfare forward beyond simply maintaining the Five Freedoms and instead focused on opportunities for animals to thrive in the managed environment.AbstractThe current manuscript highlights the aspects of an animal welfare program for a modern zoological facility. The program should be proactive to identify areas for continuous improvement as well as reactive to address any identified animal welfare concerns. The program should go beyond the five freedoms and utilize one of the more modern frameworks as a foundation for the program. The program should have an animal welfare committee where staff can submit animal welfare concerns without fear of retaliation. Ongoing monitoring of all individual animals should utilize both positive and negative indicators of welfare. Staff should be trained on the most current science and be able to understand key concepts about animal welfare. Facilities should also utilize new scientific findings to continuously improve animal care practices. Modern zoological institutions, including both zoos and aquariums, have an ethical responsibility to provide high levels of animal welfare for the animals under their professional care. Simply meeting minimum standards developed decades ago is not adequate, as animals should have the opportunity to thrive.