The Gut-Brain Connection with Kari Bastyr

In this groundbreaking episode, Victoria welcomes Kari Bastyr—a Certified Professional Canine Nutritionist (CPCN) through the Feed Real Institute, certified behavior consultant, and gluten detection dog trainer—to explore the powerful link between canine nutrition, behavior, and emotional well-being. With certifications from the IAABC and VSPDT, and professional memberships with O.D.O.R. Service Dogs, the Pet Professional Guild, and the Animal Behavior Society, Kari brings both science-backed insight and hands-on experience to the table. Kari opens up about her personal health journey with celiac disease and her dog Birdie—a trained gluten detection dog from Willow Service Dogs, where Kari also completed an internship with trainer Dawn Scheu. She explains how the gut-brain axis, microbiome diversity, and food-based inflammation can profoundly affect a dog’s behavior, contributing to issues like anxiety, fear, reactivity, and cognitive decline. The conversation also includes practical takeaways, such as how to use prebiotics, probiotics, and fresh food toppers to support your dog’s health and behavioral wellness. Kari shares why minimally processed food matters, how nutrition can make or break a behavior plan, and why food truly affects mood—for both humans and dogs. Whether you're a trainer, pet parent, or someone navigating complex canine behavior challenges, this episode is a must-listen. To learn more about Kari or to get in touch with her, visit Wag and Train or Celiac Service Dogs .