Нашла, нашла!



In a meat-eating carnivore like the cat, the cheek teeth of the upper and lowerjaws move past one another like the blades of a pair of scissors. If you draw a line along the bases of the cheek teeth, you will find the pivot of the jaw joint in the line's elongation. But if you draw a similar line for the bear, you will find that the jaw joint is raised well above the line, and this is the condition that induces the strong curvature of the lower border of the jaw.

In a scissor motion, the two blades act against each other only at one point at a time, and this point moves forward as the scissors close. But if a nutcrackerlike action is needed, in which the whole set of teeth acts at the same time, the pivot must be located well above or below the level of the teeth. This is the type of action suitable to omnivores and especially to vegetarians, and it is found not only in the bear but also in all the hoofed grazing animals, etc. Not to mention ourselves!



хех, природа мать ее а самые сильные челюсти afair у тасманского дьявола