The Association of Shelter Veterinarians seeks to improve the health and well-being of animals in shelters through the advancement of shelter medicine. The ASV brings shelter veterinarians together to share and learn from each other, setting guidelines for shelter animal care and spay & neutering, promoting the teaching of shelter medicine in veterinary colleges, serve as a resource to other professional organizations (AVMA, USDS, etc.) on legislative or regulatory issues pertaining to animal care and welfare in group housing facilities. Over the last 20 years, ASV has achieved notable advancements in the field of veterinary shelter medicine. This timeline represents those advancements. As we grow, we will continue to update our guidelines and educational platforms to evolve long into the future.