Interactions between a wild Bornean orang-utan and a Philippine slow loris in a peat-swamp forest.
All documented orang-utan-loris interactions have been from Sumatra, where lorises were opportunistically preyed upon by orang-utans. In this paper, we describe two accounts of the Bornean orang-utan (Pongo pygmaeus wurmbii) interacting with the Philippine slow loris (Nycticebus menagensis). The interactions were by two adolescent female orang-utans. No attempts to catch the loris were observed on either occasion. Neither interaction was hostile. During the second observation, which was more detailed, we considered the behaviour to be play rather than aggression or attempted predation. Based upon the lack of interest from the adult females during these rare encounters, we propose that the behaviour represents play or non-aggressive exploration rather than predation.
Orangutan Tropical Peatland Project, Jalan Semeru No. 91, Bukit Hindu, Palangka Raya, 73112, Central Kalimantan, Indonesia.
Helen C
HC
Morrogh-Bernard
Jessica M
JM
Stitt
Zeri
Z
Yeen
K A I
KA
Nekaris
Susan M
SM
Cheyne
D000818:Animals; D005106:Exploratory Behavior; D005260:Female; D007214:Indonesia; D008142:Lorisidae / Q000502:physiology*; D008297:Male; D011148:Pongo pygmaeus / Q000502:physiology*; D011235:Predatory Behavior; D065947:Rainforest