It is true the chameleon changes color, not out of any design or to conceal himself, but out of fear, being naturally timorous and trembling at every noise he hears. And this is occasioned by the extraordinary abundance of breath which he enjoys, as Theophrastus affirms. For the whole body of this creature wants but little of being nothing else but lungs; which demonstrates him to be full of spirits, and consequently apt to change. But this same change of the polypus is no product of any affection of the mind, but a kind of action. For he changes on purpose, making use of this artifice to escape what he fears, and to get the food which he lives by. For by fraud, those things that he will take never avoid him, and those things he will escape pass him by without taking any notice of him. For that he devours his own claws is an untruth, but that he is afraid of the lamprey and conger is certain; for by these he is ill treated, not being able to return them any injury, by reason of their being so slippery. Though on the other side the crawfish, having once got them within his claws, holds them with ease. For slenderness affords no help against roughness; but when the polypus comes to thrust his horns into the body of the crawfish, then also the crawfish dies. And this same vicissitude of avoiding and pursuing one another has Nature infused into them on purpose to exercise their subtlety and understanding. 28. Then again we have heard Aristotimus relating how the land hedge-hog had a perception of the rising of the wind, and praising the trigonal flight of cranes. But for my part, I produce no particular hedge-hog of Cyzicus or Byzantium, but all the sea hedge-hogs in general; who, when they perceive a storm coming, ballast themselves with little stones, lest they should be overturned by reason of their lightness or carried away by the rolling of the waves, which they prevent by the weight of their little stones. On the other side, the cranes’ order in their flight against the wind is not of one sort. But this is a general notion among all fish, that they always swim against the waves and the tide, and always take care lest the wind being in their tails should force their fins from their backs, and leave their naked bodies exposed to the cold and other inconveniences; and therefore they still oppose the prows of their bodies against the waves. For that while they thus cleave the waves at the top, the sea keeps their fins close, and lightly flowing over the superficies of their bodies, becomes less burdensome, besides that it suffers not their scales to rise. This, I say, is common to all fish, except that fish which is called ellops; which, as they report, always swims with the wind and tide, not minding the erection or opening of the scales, which do not lie towards the tail, as in other fish.