Theara, Gurjit K.Gurjit K.ThearaRuíz Macedo, JuanJuanRuíz MacedoZárate Gómez, RicardoRicardoZárate GómezHeymann, Eckhard W.Eckhard W.HeymannDolotovskaya, SofyaSofyaDolotovskaya2022-06-012022-06-012022https://resolver.sub.uni-goettingen.de/purl?gro-2/108625Abstract. Fur rubbing, i.e. rubbing a substance or an object into the pelage, has been described in numerous Neotropical primate species, including species of titi monkeys, but it seems to be a rare behaviour. Here we describe a fur rubbing event in a wild coppery titi monkey (Plecturocebus cupreus) with Psychotria sp. (Rubiaceae) leaves observed and videotaped during a field study on vigilance behaviour between September–December 2019 in the Peruvian Amazon. Plants of the genus Psychotria contain a great diversity of secondary metabolites and are often used in traditional medicine. We suggest that the fur rubbing was an act of self-medication. This is the first record of fur rubbing in coppery titi monkeys in almost 4400 h of observation accumulated over more than 20 years.enjournal_article10.5194/pb-9-7-2022