Facial Indicators of Positive Emotions in Rats

Authors: K. Finlayson, J. F. Lampe, S. Hintze, H. Wurbel, L. Melotti

Publication/Journal: Plos One

Keywords: animal emotions, facial expression, rats

2016

Playful handling of laboratory rats is more beneficial when applied before than after routine injections

Authors: Sylvie Cloutier, Kimberly L. Wahl, Jaak Panksepp, Ruth C. Newberry

Publication/Journal: Applied Animal Behaviour Science

Keywords: animal handling, fear and anxiety, injection, pain, play behaviour, positive affective states

2015

Playful handling as social enrichment for individually- and group-housed laboratory rats

Authors: Sylvie Cloutier, Chelsea Baker, Kim Wahl, Jaak Panksepp, Ruth C. Newberry

Publication/Journal: Applied Animal Behaviour Science

Keywords: animal welfare, environmental enrichment, group-size, handling, laboratory rats, play behaviour

2013

Ultrasonic vocalizations of rats (Rattus norvegicus) during mating, play, and aggression: Behavioral concomitants, relationship to reward, and self-administration of playback

Authors: Jeffrey Burgdorf, Roger A. Kroes, Joseph R. Moskal, James G. Pfaus, Stefan M. Brudzynski, Jaak Panksepp

Publication/Journal: Journal of Comparative Psychology

Keywords: 22-khz calls, 50-khz calls, emotion, rats, ultrasonic vocalizations

2008

Human laughter, social play, and play vocalizations of non-human primates: an evolutionary approach

Authors: Vettin, Julia; Todt, Dietmar

Publication/Journal: Behaviour

Keywords: acoustic analysis, evolution of, human laughter, laughter, primate play vocalizations, social play, tickling

2005