80 MAMMALS. single pull, and making but a mouthful or two of the contents. He is a big handsome fellow, over six feet long, tail and all, and is as often killed with the lasso or bolas as with dogs and poisoned arrows. He is notoriously noisy, roaring much by night, and espe- cially before bad weather. A significant habit on the part of the jaguar is noticed by Darwin: ‘One day, when hunting on the banks of the Uruguay, I was shown certain trees to which these animals constantly recur for the purpose, as it is said, of sharpening their claws. I saw three well-known trees; in front the bark was worn smooth, as if by the breast of the animal, and on each side there were deep scratches, or rather grooves, extending in an oblique line, nearly a yard in length. The scars were of different ages. A common method of ascertaining whether a jaguar is in the neighbourhood is to examine these trees. I imagine this habit of the jaguar is exactly similar to one which may any day be seen in the common cat, as, with outstretched legs and exserted claws, it scrapes the leg of a chair; and I have heard of young fruit-trees in an orchard in England having been thus much injured. Some such habit must also be common to the puma, for on the bare, hard soil of Patagonia I have frequently seen scores so deep that no other animal could have made them. The object of this practice is, I believe, to tear off the ragged points of their claws, and not, as the gauchos think, to sharpen them.’ The jaguar is the tiger of the New World ; the puma is the lion. The puma (/. concolor) ranges