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Submissions from 2011

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Animal play and animal welfare, Suzanne D.E. Held and Marek Špinka

Submissions from 2006

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When do octopuses play? Effects of repeated testing, object type, age, and food deprivation on object play in Octopus vulgaris., Michael J. Kuba, Ruth A. Byrne, Daniela V. Meisel, and Jennifer A. Mather

Submissions from 2001

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Social Play Behaviour: Cooperation, Fairness, Trust, and the Evolution of Morality, Marc Bekoff

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The Evolution of Animal Play, Emotions, and Social Morality: On Science, Theology, Spirituality, Personhood, and Love, Marc Bekoff

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Mammalian Play: Training for the Unexpected, Marek Špinka, Ruth C. Newberry, and Marc Bekoff

Submissions from 2000

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Bubble Ring Play of Bottlenose Dolphins (Tursiops truncatus): Implications for Cognition, Brenda McCowan, Lori Marino, Erik Vance, Leah Walke, and Diana Reiss

Submissions from 1995

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Play Signals as Punctuation: The Structure of Social Play in Canids, Marc Bekoff

Submissions from 1984

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Social Play Behavior, Marc Bekoff

Submissions from 1974

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Social Play and Play-Soliciting by Infant Canids, Marc Bekoff

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Social Play in Coyotes, Wolves, and Dogs, Marc Bekoff