Research overview: oncilla hybridization with Geoffroys cat

Hybridization between the southern oncilla and Geoffroys cat, documented through genetic studies, is a notable feature of the oncilla evolutionary history, and this overview reviews it. In contact zones in southern Brazil and adjacent regions, gene flow between these Leopardus species blurs their genetic boundaries and complicates taxonomy and conservation assessment. The pattern suggests a history of introgression that has shaped the genetic makeup of the populations involved. Studying this hybridization illuminates the dynamics of speciation within the Leopardus lineage and highlights how closely related small cats can exchange genes where their ranges meet. It also reinforces the importance of genetic data for accurately delimiting species and conservation units among the Neotropical small cats.