Research overview: claws and the enlarged dewclaw in sabertooth cats

This overview surveys what the claw anatomy of sabertooth cats reveals about how they handled prey. Like living felids, machairodonts had retractile claws, but in robust dirk-toothed forms such as Smilodon the first digit of the forepaw, bearing the dewclaw, was notably enlarged and powered by strong muscles. Researchers interpret this as a specialization for gripping and immobilizing large, struggling prey, complementing the heavily muscled forelimbs and supporting the grapple-and-bite hunting model. The survey reviews comparisons of claw and phalanx morphology across cats, the functional significance of an oversized dewclaw, and how claw anatomy fits within the broader suite of forelimb adaptations that allowed sabertooths to anchor victims securely while delivering a precise bite with their fragile canines.