In this episode, I will be talking to Dr. Erin Hecht. She received her bachelor of science degree in cognitive science from the University of California, San Diego in 2006, and her PhD in neuroscience from Emory University in 2013. Before moving to Harvard, she was a research scientist at the Center for Behavioral Neuroscience at Georgia State University and an affiliated scientist at the Yerkes National Primate Research Center at Emory University. Dr. Hecht joined the Department of Human Evolutionary Biology at Harvard University in January of 2019. Her lab studies brain behavior, evolution, and dogs, primates, and humans. And she has two miniature Australian shepherds, Lefty and Izzy, who are mostly good.  In this episode, we cover recent studies indicating that different breeds have slightly different brain structures. This discovery opens up a whole new avenue for understanding what traits might have been selected for in breeding - each breed may have unique cognitive strengths and weaknesses. We also discuss how to interpret genetic studies, and the relationship between dog size, brain size, and behavior. Finally - and excitingly, we discuss ongoing studies in which you can participate! You can find more information on these studies - and sign up to participate - at caninebrains.org. You can get more information on Dr. Hecht and her work at https://heb.fas.harvard.edu/people/erin-hecht. And, of course, if you'd like to geek out about dog behavior even more, please visit my Dr. Spaulding's website www.sciencemattersllc.com for even more opportunities for science learning.