There are several other curious breeds of sheep reared in the different countries of Africa. These are, the Guinea sheep of the western coast; the Morocco sheep, bred in the kingdom of the same name; the African sheep, an inhabitant of the Sahara; and the smooth-haired African sheep. There are also the Tezzan sheep, belonging to Tripoli; the Saint Helena sheep, of the celebrated Island of Saint Helena; the Congo sheep, of Congo; and the Angolas, of the same region, famous for the quality of their wool—not to be confounded, however, with the Angora wool, which is the produce of a goat. There are sheep in Tartary that eat bones like dogs, and in Hindustan and Nepaul there are kinds that have four horns each. These are the Dumbas. A little species exists in Iceland, in which the horns sometimes grow to the number of eight—though four is the more common number. America, too, has its varieties. These are the Brazilian sheep, the Demerara breed, the South American sheep, and a variety known as the West Indian.
In fact, go to whatever part of the world you may, you will find a species or variety of this valuable animal, different in some respects from all the others.
The wild sheep, like the wild goats, do not number a great many species; but there are certainly several that are yet undescribed, and perhaps there may be about a dozen in all. No doubt the great central mountains of Asia, and also the ranges of Northern Africa, still unexplored, will in time yield several new species of wild sheep. Indeed, late travellers in the Himalayas speak of wild sheep that appear to be essentially different from the argali, and other species already known.
One species of wild sheep belongs to Europe—the Moufflon, which is to this day found plentifully in the mountainous parts of Corsica, Cyprus, and Candia. It was supposed to be the original of the tame breeds; but this is a mere conjecture.
In America there is also but one species of wild sheep, though it has also a variety. This is the Bighorn of the Rocky Mountains, lately much spoken of by prairie travellers and fur-hunters. It is not known in tropical North America, nor does its range extend to the Andes of the south; but it is found to the west, in the mountains of California, in a variety called the Californian sheep. The bighorn is extremely like the Asiatic argali, and was for a long time regarded as identical with the latter; but this was an error. It is now ascertained that not only is the American animal of another species, but also that there are several distinct species of the argali itself in the different ranges of Asiatic mountains.
Africa has its wild sheep, but only in its northern parts. This is the Aoudad, which dwells in the mountains of Barbary.
Asia appears to be the head-quarters of the wild sheep. One species is found in Armenia, and another in the Caucasus. Siberia has an argali, that appears altogether to differ from the argali of the Himalayas. Again, in the Himalayan Mountains themselves, there is one species which ranges north only as far as Thibet; while on the Thibetian plateaux, as far as the Altai Mountains, there is another, if not two other species, quite distinct from the latter.
It has been observed by competent travellers, that these Thibetian argalis bear a very strong resemblance to the different breeds of tame sheep found in the same regions; from which it may be reasonably inferred that the domesticated varieties of different countries have sprung from several wild species, instead of being all descended from one common origin.