The mountain lion often kills calves, but is especially fond of young horses. In many range districts of the Western States and on the table-land of Mexico, owing to the depredations of this animal, it is impossible to raise horses. Unfortunately the predatory habits of this splendid cat are such that it can not continue to occupy the same territory as civilized man and so is destined to disappear before him. =JAGUAR= (=Felis hernandesi= and its subspecies) The jaguar, or “el tigre,” as it is generally known throughout Spanish America, is the largest and handsomest of American cats. Its size and deep yellow color, profusely marked with black spots and rosettes, give it a close resemblance to the African leopard. It is, however, a heavier and more powerful animal. In parts of the dense tropical forests of South America coal-black jaguars occur, and while representing merely a color phase, they are popularly supposed to be much fiercer than the ordinary animal. Jaguars are characteristic animals of the tropics in both Americas, frequenting alike the low jungle of arid parts as well as the great forests of the humid regions. In addition, they range south into Argentina and north into the southwestern United States. Although less numerous within our borders than formerly, they still occur as rare visitants as far north as middle Texas, middle New Mexico, and northern Arizona. They are so strictly nocturnal that their presence in our territory is usually not suspected until, after depredations on stock usually attributed to mountain lions, a trap or poison is put out and reveals a jaguar as the offender. Several have been killed in this way within our border during the last ten years, including one not far from the tourist hotel at the Grand Canyon of Arizona. Although so large and powerful, the jaguar has none of the truculent ferocity of the African leopard. During the years I spent in its country, mainly in the open, I made careful inquiry without hearing of a single case where one had attacked human beings. So far as I could learn, it has practically the same shy and cowardly nature as the mountain lion. Despite this, the natives throughout its tropical home have a great fear of “el tigre,” as I saw evidenced repeatedly in Mexico. Apparently this fear is based wholly on its strength and potential ability to harm man if it so desired.