[Reactions to mirror in three species of lemurs (Lemur fulvus, L. macaco, L. catta)].

Reactions when confronted with their own reflection in a mirror were observed in three captive groups of lemurs: L. fulvus, L. macaco and L. catta. The ability of a mirror to induce social facilitation of drinking was also studied in one individual of each species. As previously observed in monkeys, the three groups of lemurs showed much more attention to the mirror than to a non-reflective surface, especially nasal contacts. Only L. fulvus showed habituation to the mirror with successive presentations. No social behaviours were directed towards the reflection, in contrast to descriptions of mirror-image reactions in monkeys, and the mirror did not produce an effect of social facilitation. The results suggest that the mirror elicits a diminished social reaction in lemurs compared to monkeys, perhaps due to the absence of relevant olfactory stimuli.