(4) The pack has a disposition to aggression upon every sort of animal outside the pack, either as prey or as a competitor for prey: limited no doubt by what we should call considerations of prudence or utility; which must vary with the size of the pack, the prowess of its individuals, the possession of weapons, etc. After the invention of weapons and snares, many savage tribes can kill every sort of animal in their habitat, as the palæolithic Europeans did many thousands of years ago. From the outset the human pack must have come into competition with the true carnivores, must have defended itself against them, may have discovered that attack was the safest defence, and may have been victorious even without weapons. Mr. G. P. Sanderson writes: “It is universally believed by the natives (of South India) that the tiger is occasionally killed by packs of wild dogs.... From what I have seen of their style of hunting, and of their power of tearing and lacerating, I think there can be no doubt of their ability to kill a tiger.... Causes of hostility may occasionally arise between the tiger and wild dogs through attempted interference with each other’s prey.”[43] (5) A hunting-pack, probably, always claims a certain territory. This is the first ground of the sense of property, so strongly shown by domestic dogs: the territorial claims of the half-wild dogs of Constantinople are well known. To nourish a pack the hunting-grounds must be extensive. Mr. Thompson Seton says that in Canada the wolf has a permanent home-district and a range of about fifty miles.[44] Very many generations must have elapsed before the deviation of our forebears from anthropoid habits resulted in the formation of so many packs as to necessitate the practical delimitation of hunting-grounds. Then the aggressiveness of the pack turned upon strangers of its own species; the first wars arose, and perhaps cannibalism on the part of the victors. It is certain that, in North America, wolves kill and eat foxes, dogs, coyotes; and it is generally believed that wolves will eat a disabled companion; though, according to Mr. W. H. Hudson, a wolf will only eat another when it has killed that other, and then only as the carrying out of the instinct to eat whatever it has killed.[45] It may be so. (6) A pack must have a leader, and must devotedly follow him as long as he is manifestly the best of the pack; and here we have a rudimentary loyalty. (7) Every individual must be subservient to the pack, as long as it works together; and this seems to be the ground of the “instinct of self-abasement” (McDougall), so far as the attitudes involved in such subserviency are due to a distinct emotional impulse, and are not rather expressive of fear or of devotion. (8) The members of the pack must be full of emulation; in order that, when the present leader fails, others may be ready to take his place.