Thus, the temperature of the climate, the quality of the food, and the evils arising from slavery, are the three causes of the changes and degeneration of animals. The effects of each deserve to be particularly considered, and their relations, when viewed in detail, will present a picture, in the foreground of which we shall see Nature such as she is at present, and in the distant perspective what she was before her degradation.

Let us compare our sheep with the muflon, from whom they spring. This last, large and swift as a stag, armed with defensive horns and hoofs, and covered with a rough hair, dreads neither the inclemency of the sky, nor the voracity of the wolf. He not only escapes his enemies by his swiftness, but can even stand against them by the strength of his body, and the solidity of the weapons with which his head and feet are furnished. What a difference from our sheep, who scarcely have any power to subsist in flocks, and who cannot defend themselves even by numbers; who are unable to withstand the rigors of our winters without shelter, and who would all perish if it were not for the care and protection of man? In the hottest climates of Africa and Asia, the muflon, who is the common father of all the races of sheep, seems to have suffered less degeneration than in any other country; for, though reduced to a domestic state, he has preserved his stature and his hair, and has only suffered a loss in the size of his weapons. The sheep of Senegal and India are the largest of all domestic sheep, and those whose nature has experienced the least degradation. The sheep of Barbary, Egypt, Arabia, Persia, Armenia, &c. have undergone greater changes; they are, relatively speaking, with regard to the human species, improved in some respects, and vitiated in others; but improvement and degeneration are the same thing with regard to Nature, as they both imply an alteration from the original formation. Their coarse hair is changed into fine wool; their tail, loaded with a lump of fat, has become so large and inconvenient a bulk, that the animal drags it along with pain and difficulty; and while thus charged with superfluous matter, and adorned with a beautiful fleece, their strength, agility, and weapons are diminished; for these broad and long-tailed sheep are scarcely half the size of the muflon; they cannot fly from danger, nor make resistance against an enemy; and are in continual need of the care and assistance of man to preserve and multiply their species. The degeneration of the original species is still greater in our climates. Of all the qualities belonging to the muflon, our ewes and rams retain nothing but a small portion of vivacity, and even that yields to the voice of the shepherd. Timidity, weakness, resignation, and stupidity, are the only sorrowful remains of their degraded nature. If we would restore their strength and size, our Flanders sheep should be united with the muflon, and be no longer suffered to propagate with the inferior species; and if we would devote this species to the more useful purposes of affording good meat and fine wool, we must imitate some of our neighbours in propagating the Barbary race of sheep, which, being transported into Spain and England, has been attended with such great success. Strength and magnitude are the masculine attributes; plumpness and beauty of the skin are feminine qualities. If we would have fine wool, therefore, our rams should be supplied with Barbary ewes: and if the restoration of size be the object, the muflon should be given to our sheep.

The same effect might be produced in our goats. We might change the nature of their hair, and render it as useful as the finest wool, by intermixing them with the goats of Angora. The goat species, although greatly degenerated, is less so in our climate, than that of the sheep; and in the warm countries of Africa and India, it appears to be still more degenerated. The smallest and weakest goats, are those of Guinea, Juda, &c. and yet in those countries we find the largest and strongest sheep.

The species of the ox, of all domestic animals, seems to be that on which its food acts with the greatest influence. It attains a prodigious size in those countries where the pasture is rich and nourishing. The ancients called the oxen of Ethiopia and some provinces of Asia by the name bull-elephants, because in those countries they nearly approached the size of the elephant. The great plenty of herbage, and its succulent quality, produced this effect, proofs of which we have in our own climate. An ox fed on the tops of the verdant mountains of Savoy or Switzerland acquires twice the bulk of our oxen; though the oxen of Switzerland, like ours, are shut up in the stable during the greatest part of the year. The difference arises from their being admitted to free pasture as soon as the snow is melted; whereas in our provinces they are not permitted to enter the meadows till after the crop of grass reserved for the horses is carried off; they are, therefore, neither amply fed nor properly nourished, and it would prove extremely useful to the nation in general, if a regulation were made to abolish these useless pastures, and to encourage enclosures. Climate also has great influence on the nature of the ox. In the northern parts of both continents, it is covered with a long soft hair resembling wool; and on its shoulders is a large hunch, which deformity is found in all the Oxen of Asia, Africa, and America. Those of Europe alone have no hunch. The last, are the primitive race to which the hunched race ascend by intermixture in the first or second generation. What still further proves this hunched race to be only a variety of the first, is its being subject to great degradations. There is an uncommon difference in their size. The little zebu of Arabia is not more than a tenth part the size of the bull-elephant.

In general, the influence of food is greater, and produces more sensible effects on those animals which feed on herbage and fruits. Those that live only upon flesh, vary less from that cause than from the influence of climate; because flesh is an aliment, already assimilated to the nature of the carnivorous animal that devours it; whereas grass being the first product of the earth, possesses all its properties, and immediately transmits the terrestrial qualities to the animal.

Thus the dog on which food seems to have but slight influence is, of all carnivorous animals, the most various species; it seems to follow exactly the difference of climate in its degradation; it is naked in the warmest climates; clothed with a thick and coarse hair in the northern regions, and adorned with a beautiful silken coat in Spain and Syria, where the mildness of the air changes the hair of most animals into a sort of silk. But independently of these external varieties, which are produced by the influence of climate alone, the dog is subjected to other alterations which proceed from its condition, its captivity, or its state of society with respect to man.

The augmentation, or diminution, of its size, is caused by the care taken to unite the great with the small individuals. The shortness of the ears and tail proceeds also from the hand of man. Dogs which have had their tails and ears cut for a few generations transmit those defects wholly, or partly, to their descendants. I have seen dogs whelped without tails, which I at first took for individual monsters; but I am since assured that this breed exists, and is perpetuated by generation. The long and hanging ear, which is the most general and certain mark of domestic slavery, is it not common to almost every dog? Among thirty different races of which the species is at present composed, only two or three have preserved their primitive ears; the shepherd’s dog, the wolf-dog, and the dog of the north, alone have erect ears. The voice of these animals has also undergone strange alterations. The dog seems to owe its vociferous nature to man, who, of all beings, uses his tongue the most. In a state of nature the dog is almost dumb, and seldom even howls, except when pressed with hunger; it acquired the faculty of barking by intercourse with men in polished societies, for when transported to extreme climates, where the people are uncultivated, as the Laplanders, or Negroes, he ceases to bark, assumes his natural howling, and often becomes absolutely dumb. Dogs with erect ears, particularly the shepherd’s dog, which is the least degenerated, is also that which makes the least use of his voice, passing a life of solitude in the country, and having no intercourse but with sheep and a few simple peasants, he is, like them, of a serious and silent disposition, though at the same time very active and sagacious: of all dogs this has the fewest acquired qualities, and the most natural talents; it is also the most useful to preserve good order, and to protect the sheep; and it would prove more advantageous to increase this breed than to extend that of other dogs, who are of no other service but for our amusement, and whose numbers are so great, that there is not a town or village where a number of families might not be fed with the aliments consumed by these animals.

The domestic state has greatly contributed to vary the colour of animals, which was originally, in all, either brown or black. The dog, the ox, the goat, the sheep, and the horse, have imbibed all kinds of colours. The hog has changed from black to white; and pure white, without any spot, seems to mark the last degree of degeneration, and which is commonly accompanied with imperfections or essential defects. In the race of white men, those who are remarkably so, and whose hair beard, and eyebrows, are white, are often deaf, and also have red and weak eyes. In the black race, the fairest negroes are of a nature still more weak and defective. All those animals which are absolutely white have the defects of being hard of hearing and having red eyes. This kind of degeneration, though more common in domestic animals, is sometimes seen in the wild species; as in the elephant, stag, fallow-deer, monkies, moles, and mice, in all of which this colour is always accompanied with either a greater or a less weakness of body and dulness of sensation.