Of the jaguar, or ounce (Felis onca), there are two species--the one of a palish brown-yellow, variegated on the upper parts of the body with streaks and regular oblong spots of black; while the other is of a general black hue, and is considered the more savage of the two. It reaches a size which may vie with the tigers of India, though it is often not much larger than a wolf. It is frequently called the tiger or panther of the New World. The tail is not so long as the body. In outward appearance it closely resembles the leopard, especially in its arborial habits, as by means of its powerful claws it can with ease spring up the trunk of a tree, and make its way along the branches, ready to pounce down upon a foe. Nearly every creature of the forests and arid plains over which it roams, and many which frequent the margins of the rivers and lakes, have to dread its voracious jaws. It will spring from the bough, along which it lies crouching, on the back of the thick-skinned tapir, which, with those powerful claws clinging to its hide, dashes terror--stricken through the thickets, endeavouring to shake off its foe. It will even fearlessly attack the alligator, in spite of the latter's enormous jaws,--avoiding which, by its agility, it will tear open the reptile's side, and devour it before life is extinct. It lies watching from a projecting trunk for the huge manatee swimming by, and grappling it with its claws, holds it fast in the struggle for life and death, by degrees dragging the vast body out of the water, and never letting go its grasp till it has succeeded in capturing its prey. Turtles become its easy victims. Watching for them as they crawl up the sandy banks, it turns them helplessly over with its paws. The capybara, or water-hog, seems born for the especial purpose of serving it as food, enormous numbers of that big rodent being devoured by it. Even active monkeys cannot escape it. It will climb the trees and surprise them when sleeping; or sometimes, lying in concealment, springs out among a troop of them joyously gambolling, unsuspicious of danger, when their shrieks of terror and the hoarse roar of the jaguar may be heard resounding through the forest. But where flocks and herds are collected in the neighbourhood of man's abode, the jaguar is especially dreaded, as it will spring upon a horse and bring it to the ground with ease; it has been known to drag one many yards to the water's side, and swim across the river with its prey, carrying it away on the opposite side to its home in the forest. Sheep and deer fall easy victims. When seizing a deer or horse, it leaps on the animal's back, and grasping the head with its claws, wrenches it back till the vertebrae of the neck are broken.