A new study published in the journal Proceedings of the Royal Society B: Biological Sciences reveals one of the enigmas related to the social behaviour of the western lowland gorilla (Gorilla gorilla gorilla) in the heart of the African equatorial rainforest. These primates show a dynamic social structure –individuals change frequently between families, and have a high degree of tolerance and peaceful coexistence among the members, according to the new article by experts José Domingo Rodríguez Teijeiro, Magdalena Bermejo, Guillem Molina Vacas, from the Faculty of Biology and the Biodiversity Research Institute of the University of Barcelona (IRBio).