Research overview: prey specialization and extinction risk in big cats

This overview examines the idea that dietary and predatory specialization made many extinct big cats especially vulnerable to extinction. Hypercarnivorous predators such as sabertooths, with anatomy finely tuned to killing large prey, may have had little flexibility to switch food sources when megaherbivore populations declined, in contrast to more generalist carnivores that survived the end-Pleistocene transition. The survey reviews how researchers assess specialization from anatomy, isotopes, and dental evidence, the concept of an evolutionary ratchet toward extreme carnivory that limits adaptability, and how specialization correlates with extinction across carnivore lineages. It discusses why obligate large-prey hunters like Smilodon and Homotherium were at heightened risk, and how this pattern informs broader theory about the survival and loss of specialist predators during times of ecological change.