Research overview: why leopard melanism is not a taxonomic trait

Black panthers are melanistic leopards (or jaguars), and their existence is often misunderstood as indicating a separate species or subspecies. This overview explains the genetics of leopard melanism, a recessive coat-color polymorphism that varies in frequency by region, reaching high levels in dense tropical forests such as those of Java and parts of Southeast Asia where dark coats may aid camouflage. It clarifies that melanistic and spotted leopards interbreed freely and belong to the same populations, so coat color carries no taxonomic weight. The piece situates this within the broader principle that pigmentation polymorphisms, like white tigers, are individual or local variants rather than markers of lineage. It is a frequent point of public confusion that systematics firmly resolves.