MuttMix is a non-profit research collaboration between the International Association of Animal Behavior Consultants (IAABC), the University of Massachusetts Medical School, and the Broad Institute of Harvard and MIT. The data collected will tell us a lot about how people perceive breeds and mixes, how different breed mixes affect the appearance of a dog, how well people can guess their canine friends’ ancestries from looks alone, and how that might affect our lives with dogs. This information is vital to many future projects throughout the scientific world.