All these three species, either habitually or occasionally, hunt together in concert—that is to say, either two or more carry out a certain plan, in which each helps the other. Thus, in India, Mr. Elliott observed, one morning, two wolves standing side by side as though in consultation, whilst far off, upon the plain, grazed a small herd of nylgaus—the typical Indian antelope—on which their eyes were, from time to time, fixed with a greedy longing. At length the plan of campaign was decided upon. One of the wolves trotted quietly off to a small nullah or ravine, where it lay down amidst the bushes with which its sides were dotted, whilst the other, with a stealthier pace, made a wide circle which brought him, at length, unobserved, on the farther side of the antelopes, and at no great distance from them. Further concealment was now unnecessary, and suddenly flinging off the mask, the wolf rushed down upon the startled creatures, and began to drive them towards the nullah. This it did by continually rushing round, either on one side or the other, according as the herd showed a disposition to break away to right or left of the line along which they were required to go, exactly as a sheep-dog drives the sheep to the fold. At length, when the nullah was reached, the wolf that lay behind a bush on the very edge of it, leapt suddenly out, and selecting a doe, sprang upon it, and being joined by its fellow strategist, the two soon pulled it down, and feasted on it at their leisure.