Research overview: neck musculature and head-depression in sabertooth killing

This overview examines how the neck and skull anatomy of Smilodon and other sabertooths reveal the mechanics of the killing bite. Because the jaw muscles alone produced a comparatively weak bite, much of the force driving the canines into prey is thought to have come from powerful neck muscles pulling the head downward. Researchers study the enlarged attachment surfaces on the back of the skull, the orientation of the cervical vertebrae, and the mastoid region to estimate the strength and action of these head-depressor muscles. The survey reviews how this neck-driven model reconciles the fragile-looking canines with effective predation, and how comparisons with living cats highlight the unusual integration of head and neck in machairodont hunting.