Belgian Journal of Zoology continues in a long scientific tradition devoted to the promotion of zoology and to the publication of research in zoology in Belgium. This tradition goes back to 1863, when the “Société malacologique de Belgique” was founded in Brussels and began to publish the “Annales de la Société malacologique de Belgique.” Name changes took place in 1903 (“Annales de la Société royale malacologique et zoologique de Belgique”), and 1923 (“Annales de la Société Royale Zoologique de Belgique”). With the internationalisation of the editorial board in 1989, the journal was opened to the international scientific community, and the name “Belgian Journal of Zoology” was chosen. The Belgian Journal of Zoology is an online and diamond open access journal (i.e. no charge for Authors nor Readers) publishing high-quality research papers that are original, of broad interest and hypothesis-driven. Manuscripts on all aspects of zoology and animal sciences from molecule to biosphere are considered, including, for example, anatomy, behaviour, biodiversity, developmental biology, ecology, evolution, genetics, genomics and physiology. Manuscripts on veterinary topics are outside of the journal’s scope. The Belgian Journal of Zoology also welcomes reviews, especially from complex or poorly understood research fields in zoology. The Belgian Journal of Zoology does no longer publish purely taxonomic papers. Surveys and reports on novel or invasive animal species for Belgium are considered only if sufficient new biological or biogeographic information is included. The Belgian Journal of Zoology is published jointly by the Royal Belgian Zoological Society and the Royal Belgian Institute of Natural Sciences, with the support of the FNRS and of the Universitaire Stichting van Belgie/Fondation Universitaire de Belgique (University Foundation FU US). Impact factor 2021 of BJZ is 1.5.