Carnivorous animals have smaller incisors, and their canines are strong and sharp, suitable for killing and tearing prey; their molars have sharp edges. The last premolar on the upper jaw and the lower jaw's molar meet like scissors, becoming carnassial teeth, suitable for cutting through animal bones, cartilages, and tendons.
Herbivorous animals have duller teeth than carnivores. Their incisors are broad, some lack incisors altogether, but the gum area where their incisors should be is tough, acting as a substitute for incisors. Their molars are broad and their surfaces uneven. These features help in cutting and grinding plant stems and leaves.
"To put it simply, the front half of an herbivorous animal's teeth look like planks—neat and aligned, yet very sharp. A bite into a clump of grass leaves a trace as if it has been cropped by a razor blade."