In the number and form of his teeth, in the asperity of his tongue, in the conformation of his organs of sense, and in the number of his claws, he accurately corresponds with the legitimate species of the genus Felis. The principal character in which he differs from them consists in the slight degree of retractility of these latter organs. Instead of being withdrawn within sheaths appropriated for the purpose, as in the whole of the cats properly so called, the claws of the Hunting Leopard are capable of only a very limited retraction within the skin, and are consequently exposed to the action of the ground on which they tread, their points and edges being thus rendered liable to be blunted by the constant pressure to which they are subjected, almost to the same extent as in the dogs. The slightest consideration of the uses to which the claws are applied by the whole of the feline tribe, in whom they are, in fact, in consequence of their extreme power and sharpness, organs of offence if possible more deadly and more destructive than the teeth, will teach us that the modification which has just been described in so important a part of their organization, must of necessity be accompanied by a corresponding change in manners and habits; and that convenience alone, and the want of analogous structure in any other animal, could justify us in continuing to class the Chetah among the cats, from whom he differs in so essential a particular.
In outward form, however, notwithstanding his more slender make, the difference between them is by no means great. His head, although more elevated and prominent in front, exhibits the same broad lateral expansion, caused by the thick mass of muscle which acts so powerfully upon the short and dilated jaws of the cats, and imparts to them that tremendous force and effect for which they are so remarkable. His legs, notwithstanding their increased length and slender proportions, retain all the elastic springiness, by means of which the Leopard or the Tiger are enabled to bound with so much vigour and velocity upon their unsuspecting prey. His air and manners, too, are unquestionably those of the cats; and his mode of colouring, which we shall next proceed to describe, although exhibiting very peculiar and marked distinctions, offers so close an analogy to that of the Jaguar and the Leopard, that, were we to regard this character alone, it would be impossible to arrange him in a different group from that which comprehends those beautifully spotted, but ferocious, beasts. His fur, however, it must be remarked, has little of the sleekness which characterizes those animals, but exhibits, on the contrary, a peculiar crispness which is not to be found in any other of the tribe.