The HUANACO--or Guanaco, as it is sometimes written--has a more elongated head and more slender legs than the Vicuna, at the same time that there are elongated warty tubercles upon the hinder limbs not found in the latter species. Its height at the shoulder is three feet and a half. The fur is uniformly brown, at the same time that it is rough and short. It can be domesticated without difficulty. Its tail is short and hairy. Its native haunts are the highlands of Peru and Chili, as well as farther south, where it lives in herds, which descend to the valleys in the winter months. When hunted they have a habit of now and again facing their pursuers, after which they gallop off afresh. When attacked at close quarters they defend themselves by striking with their fore-feet. From Mr. Darwin’s account of the animal in the “Voyage of the _Beagle_,” we learn that it “abounds over the whole of the temperate parts of South America, from the wooded islands of Tierra del Fuego, the rough Patagonia, the hilly parts of the La Plata, Chili, even to the Cordillera of Peru. Although preferring an elevated site, it yields in this respect to its near relative the Vicuna; on the plains of Southern Patagonia we saw them in greater numbers than in any other part. Generally they go in small herds, from half a dozen to thirty together, but on the banks of the St. Cruz we saw one herd which must have contained at least five hundred. On the northern shores of the Strait of Magellan they are also very numerous. Generally the Guanacoes are wild and extremely wary. The sportsman frequently receives the first intimation of their presence by hearing from a distance the peculiar shrill neighing note of alarm. If he then looks attentively, he will perhaps see the herd standing in a line on some distant hill. On approaching them, a few more squeals are given, and then off they set at an apparently slow--but really quick--canter along some narrow beaten track to a neighbouring hill. If, however, by chance he should abruptly meet a single animal, or several together, they will generally stand motionless, and intently gaze at him; then, perhaps, move on a few yards, turn round, and look again. What is the cause of this difference in their shyness? Do they mistake a man in the distance for their chief enemy, the Puma, or does curiosity overcome their timidity? That they are curious is certain; for if a person lies on the ground and plays strange antics, such as throwing up his feet in the air, they will almost always approach by degrees to reconnoitre him.... On the mountains of Tierra del Fuego, and in other places, I have more than once seen a Guanaco, on being approached, not only neigh and squeal, but prance and leap about in the most ridiculous manner, apparently in defiance as a challenge.... The Guanacoes readily take to the water; several times at Port Valdez they were seen swimming from island to island. Byron, in his ‘Voyage,’ says he saw them drinking salt water.