Research overview: species and subspecies concepts applied to cats

Whether a cat population is a species or a subspecies depends heavily on which species concept is used. This overview compares the biological species concept (reproductive isolation), the phylogenetic species concept (smallest diagnosable cluster), and integrative approaches that weigh multiple criteria. It shows why felids are a hard test case: many taxa hybridize in captivity or at range edges, so strict reproductive isolation rarely applies, while phylogenetic diagnosability can multiply species. The piece explains the Cat Classification Task Force preference for concordant, independent evidence before recognizing taxa, and how that conservative stance reduced inflated subspecies counts. It also covers the practical consequences: a name carries legal weight under CITES and the Red List, so concept choice is not merely academic but shapes funding and protection.