When the jaguars approached the edge of the forest, which they frequently did, a dog belonging to the party began to howl, and seek refuge under their cots. Sometimes, after a long silence, the cry of the jaguars came from the tops of the trees, when it was followed by an outcry among the monkeys. Humboldt supposes the noise thus made by the inhabitants of the forest during the night, to be the effect of some contests that had arisen among them.
On the pampas of Paraquay, great havoc is committed among the herds of horses by the jaguars, whose strength is quite sufficient to enable them to drag off one of these animals. Azara caused the body of a horse, which had been recently killed by a jaguar, to be drawn within musket-shot of a tree, in which he intended to pass the night, anticipating that the jaguar would return in the course of it, to its victim; but while he was gone to prepare for his adventure, behold the animal swam across a large and deep river, and having seized the horse with his teeth, dragged it full sixty paces to the river, swam across again with his prey, and then dragged the carcase into a neighboring wood; and all this in sight of a person, whom Azara had placed to keep watch. But the jaguars have also an aldermanic goût for turtles, which they gratify in a very systematic manner, as related by Humboldt, who was shown large shells of turtles emptied by them. They follow the turtles towards the beaches, where the laying of eggs is to take place, surprise them on the sand, and in order to devour them at their ease, adroitly turn them on their backs; and as they turn many more than they can devour in one night, the Indians often profit by their cunning. The jaguar pursues the turtle quite into the water, and when not very deep, digs up the eggs; they, with the crocodile, the heron, and the gallinago vulture, are the most formidable enemies the little turtles have. Humboldt justly remarks, "When we reflect on the difficulty that the naturalist finds in getting out the body of the turtle, without separating the upper and under shells, we cannot enough admire the suppleness of the jaguar's paw, which empties the double armor of the _arraus_, as if the adhering parts of the muscles had been cut by means of a surgical instrument."