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133. Speaking Across Species: Human–Chimpanzee Conversation with Dr. Mary Lee Jensvold (S15)

The Deal With Animals 15 December 2025


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Episode 1 of Series 15:  Transcript

We explore the story of Washoe, the first non-human to learn American Sign Language, and discuss the broader implications of chimpanzee communication on our understanding of language, culture, and ethics. The conversation covers the challenges of raising chimps in human environments, the role of sanctuaries in their care, and the ongoing reliance on monkeys in U.S. laboratories.

Guest Bio: Mary Lee Jensvold, Ph.D. is the Primate Communication Scientist and Associate Director at Fauna Foundation and a Senior Lecturer in the Primate Behavior and Ecology Program and Anthropology Department at Central Washington University. She is the former director of the Chimpanzee & Human Communication Institute at Central Washington University. She has spent her career working with the signing chimpanzees, Washoe and her family. Her expertise is in behavior and communication, including American Sign Language in chimpanzees and other apes. Her research includes communication among and between chimpanzees and humans, and captive caregiving practices. Her interest in chimpanzee sanctuaries include care practices, behavior, design, and welfare. She is a member of the board of directors of the Animal Welfare Institute, Fauna Foundation, and Friends of Washoe. She is on the steering committee of the North American Primate Sanctuary Alliance (NAPSA). She has numerous publications in journals and books. She has authored and co-authored books including Chimpanzee Behaviour: Recent Understandings from Captivity and the Forest.

Book Recommendation: Next of Kin: My Conversations with Chimpanzees (Living Planet Book) 

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Humans interact with animals every day of our lives. Even those without pets interact with animals in various ways: diet, wildlife, the clothes they wear. Even most medicines use animals in testing or in the medicine itself. This is a podcast about Anthrozoology: the study of interaction between humans and non-human animals.

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Animal Communications (Series 15 Trailer)

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