Naturalistic fallacy

Biological Parallel

Infanticide is "natural" in lions when males take over prides, eliminating competitors' offspring to bring females into estrus—but naturalness doesn't confer moral status. Cancer is natural; antibiotics are artificial—yet we don't celebrate tumors or reject penicillin. Biology describes mechanisms (what increases reproductive fitness) without prescribing values (what ought to be pursued). Natural selection maximizes genetic propagation, not happiness, health, or justice.