Carnassial teeth in carnivorous mammals function to

• A. Grind plant material
• B. Shear flesh and cut through meat
• C. Detect prey via smell
• D. Mount in jaw alignment

Answer: (B)

The key idea is how specialized carnivore teeth act like scissors to process meat. Carnassial teeth are a pair of sharp, blade‑like surfaces formed by the upper last premolar and the lower first molar. When the mouth closes, these surfaces slide past one another in a shearing action, efficiently slicing through flesh, muscle, and sinew. This cutting function is ideal for a meat-based diet and contrasts with grinding surfaces used to break down plant material. Smelling prey relies on the nose and brain rather than teeth, and jaw alignment relates to how the bite comes together, not to the actual cutting action. So this tearing‑and‑cutting role best explains how carnassial teeth work.