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Look Inside Homosexual Behaviour in Animals

Homosexual Behaviour in Animals
An Evolutionary Perspective


Volker Sommer, Paul L. Vasey, Kurt Kotrschal, Josef Hemetsberger, Brigitte Weiss, Catherine E. King, Janet Mann, Hilde Vervaecke, Catherine Roden, Ludek Bartos, Jana Holeckova, Akihiro Yamane, Ellen Kapsalis, Rodney L. Johnson, Peter Schauer, Diana Kyriazis, Juichi Yamagiwa, Barbara Fruth, Gottfried Hohmann, Dennis Werner
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  • Date Published: February 2011
  • availability: Available
  • format: Paperback
  • isbn: 9780521182300

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About the Authors
  • Behavioural observations from both the field and captivity indicate that same-sex sexual interactions are widespread throughout the animal kingdom, and occur quite frequently in certain non-human species. Proximate studies of these phenomena have yielded important insights into genetic, hormonal and neural correlates. In contrast, there has been a relative paucity of research on the evolutionary aspects. Homosexual Behaviour in Animals seeks to redress this imbalance by exploring animal same-sex sexual behaviour from an evolutionary perspective. Contributions focus on animals that routinely engage in homosexual behaviour and include birds, dolphin, deer, bison and cats, as well as monkeys and apes, such as macaques, gorillas and bonobos. A final chapter looks at human primates. This book will appeal to graduate students and researchers in evolutionary biology, biological anthropology, zoology, evolutionary psychology, animal behaviour and anyone interested in the current state of knowledge in this area of behavioural studies.

    • Was the first book to look at this subject from an evolutionary perspective
    • Broad coverage of species, from birds to primates and finally humans; the book concentrates on species that routinely engage in same-sex sexual behaviour
    • Illustrated throughout, with contributions from leading sexologists
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    Reviews & endorsements

    Review of the hardback: 'For anyone interested in animal behaviour, this book is a valuable reference which brings together a collection of current research into homosexual behaviour in animals in one volume.' Biologist

    Review of the hardback: 'Sommer and Vasey have sharply steered the Darwinian study of homosexual behaviour out of its infancy and towards all the defining features of a mature science … the book deserves to be widely read by researchers interested in ultimate functions of human and animal behaviour alike.' Journal of Evolutionary Psychology

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    Product details

    • Date Published: February 2011
    • format: Paperback
    • isbn: 9780521182300
    • length: 394 pages
    • dimensions: 244 x 170 x 21 mm
    • weight: 0.63kg
    • availability: Available
  • Table of Contents

    Part I. Introduction:
    1. Homosexuality in animals. Topics, hypotheses, and research trajectories Volker Sommer and Paul L. Vasey
    Part II. Non-primates:
    2. Making the best of a bad situation. Homosociality in male greylag geese Kurt Kotrschal, Josef Hemetsberger and Brigitte Weiss
    3. Pink flamingos. Atypical partnerships and sexual activity in colonially breeding birds Catherine E. King
    4. Establishing trust. Sociosexual behaviour and the development of male-male bonds among Indian Ocean bottlenose dolphins Janet Mann
    5. Going with the herd. Same-sex interaction and competition in American bison Hilde Vervaecke and Catherine Roden
    6. Exciting ungulates. Male-male mounting in fallow, white-tailed and red deer Ludek Bartos and Jana Holeckova
    7. Frustrated felines. Sexual mounting between males in feral cats Akihiro Yamane
    Part III. Primates:
    8. The pursuit of pleasure. An evolutionary history of homosexual behaviour in Japanese macaques Paul L. Vasey
    9. Getting to know you. Female-female consortships in free-ranging rhesus monkeys Ellen Kapsalis and Rodney L. Johnson
    10. A wild mixture of motivations. Same-sex mounting in Indian langur monkeys Volker Sommer, Peter Schauer and Diana Kyriazis
    11. Playful encounters. The development of homosexual behavior in male mountain gorillas Juichi Yamagiwa
    12. Social grease for females? Same-sex genital contacts in wild bonobos Barbara Fruth and Gottfried Hohmann
    13. The evolution of male homosexuality and its implications for human psychological and cultural variations Dennis Werner
    Part IV. Outlooks: Science and Beyond:
    14. Where do we go from here? Research on the evolution of homosexual behaviour in animals Paul L. Vasey
    15. Against nature?! An epilogue about animal sex and the moral dimension Volker Sommer

  • Editors

    Volker Sommer, University College London

    Paul L. Vasey, University of Lethbridge, Alberta


    Volker Sommer, Paul L. Vasey, Kurt Kotrschal, Josef Hemetsberger, Brigitte Weiss, Catherine E. King, Janet Mann, Hilde Vervaecke, Catherine Roden, Ludek Bartos, Jana Holeckova, Akihiro Yamane, Ellen Kapsalis, Rodney L. Johnson, Peter Schauer, Diana Kyriazis, Juichi Yamagiwa, Barbara Fruth, Gottfried Hohmann, Dennis Werner

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