Note 2 — BOOK XVIII. THE NATURAL HISTORY OF GRAIN.

Of course this is only mere declamation; it is not probable that the animals have any notion at all of sharpening the weapons that nature has given; in addition to which, this mode of sharpening them against hard substances would only wear away the enamel, and ultimately destroy them. The acts of animals in a moment of rage or frenzy have evidently been mistaken here for the dictates of instinct, or even a superior intelligence.