The males fight together; two one day passed quite close to me, squealing and trying to bite each other; and several were shot with their hides deeply scored.

Herds sometimes appear to set out on exploring parties: at Bahia Blanca, where, within thirty miles of the coast, these animals are extremely unfrequent, I one day saw the tracks of thirty or forty, which had come in a direct line to a muddy salt-water creek.

They then must have perceived that they were approaching the sea, for they had wheeled with the regularity of cavalry, and had returned back in as straight a line as they had advanced.

The guanacos have one singular habit, which is to me quite inexplicable; namely, that on successive days they drop their dung in the same defined heap.

I saw one of these heaps which was eight feet in diameter, and was composed of a large quantity.