But there is also a third class which springs into existence in the warmer climates of America, some of whose representatives almost equal the Tiger in magnitude, in vigour, and in ferocity, while others rival the Leopard in the beauty and sleekness of their fur, and in the agility and gracefulness of their motions. Foremost of these, and holding the highest rank among the most formidable animals of the New World, stands the Jaguar, or, as he is sometimes called, the American Tiger. Superior to the Leopard in size as well as in strength, he approaches very nearly in both respects to the Lionesses of the smaller breeds: he is, however, less elevated on his legs, and heavier and more clumsy in all his proportions. His head is larger and rounder than that of the Leopard; and his tail is considerably shorter in proportion, being only of sufficient length to allow of its touching the ground when the animal is standing, while that of the Leopard, as we have before observed, is very nearly as long as his whole body. This disproportion between the length of their tails affords perhaps the most striking distinction between the two animals, offering, as it does, a constant and never-failing criterion; whereas the difference in the marking of their furs, although sufficiently obvious on a close examination, depends almost entirely on such minute particularities as would probably escape the notice of a superficial observer, and were in fact for a long time so completely neglected, even by zoologists, that it is only within a few years that we have been again taught accurately to distinguish between them. These particularities we shall now proceed to point out.