A new scientific classification has redefined giraffes from being a single species to four distinct species. This update resolves a debate ongoing since the 18th century and is based on differences in habitat, skull morphology, and genetic divergence. The four recognized species are the Northern giraffe, Masai giraffe, Southern giraffe, and Reticulated giraffe. This reclassification has been acknowledged by the International Union for Conservation of Nature (IUCN) and reflects a more nuanced understanding of giraffe biodiversity.