Relaxed open mouth as a playful signal in wild ring-tailed lemurs

In Play We Trust. Rapid Facial Mimicry Predicts the Duration of Playful Interactions in Geladas

(2013) Giada Mancini et al.   PLoS One

Rapid Facial Mimicry In Geladas

(2013) Giada Mancini et al.   Scientific Reports

Scratching around mating: factors affecting anxiety in wild Lemur catta

(2012) Valentina Sclafani et al.   PRIMATES

The use of the bared-teeth display during play fighting in Tonkean macaques (Macaca tonkeana): Sometimes it is all about oneself.

(2011) Sergio M. Pellis et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

Playing with the face: Playful facial “chattering” and signal modulation in a monkey species (Theropithecus gelada).

(2011) Elisabetta Palagi et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY

The central importance of information in studies of animal communication

(2010) Robert M. Seyfarth et al.   ANIMAL BEHAVIOUR

Can you believe my eyes? The importance of interobserver reliability statistics in observations of animal behaviour

(2009) Allison B. Kaufman et al.   ANIMAL BEHAVIOUR

Disambiguating the “guilty look”: Salient prompts to a familiar dog behaviour

(2009) Alexandra Horowitz   BEHAVIOURAL PROCESSES

Adult play fighting and potential role of tail signals in ringtailed lemurs (Lemur catta).

(2009) Elisabetta Palagi   JOURNAL OF COMPARATIVE PSYCHOLOGY

Partner preferences and asymmetries in social play among domestic dog, Canis lupus familiaris, littermates

(2008) Camille Ward et al.   ANIMAL BEHAVIOUR

Sharing the motivation to play: the use of signals in adult bonobos

(2007) E. Palagi   ANIMAL BEHAVIOUR

Rapid facial mimicry in orangutan play

(2007) M. Davila Ross et al.   Biology Letters