“Marshmallows Are Their Favorite”: Inside a Primate Lab with Undercover Investigator Lindsay Oliver

Newsletter — Weekly – Our Hen House · Oct 2, 2026 · 56m

Award-winning undercover investigator Lindsay Oliver joins Jasmin and Mariann to discuss her groundbreaking work inside a national primate research center and her new memoir, Marshmallows Are Their Favorite: Undercover at a Primate Lab. Over a two-decade career spanning more than 100 investigations across factory farms, research labs, zoos, and circuses, Lindsay shares what it’s really like to go undercover in facilities…