It is clearly a reasonable supposition that some of these primitive canine species may have been far more domesticable than the existing kindred of the dog--the wolves, foxes, jackals, or hyenas--differing from their fiercer kindred much as the zebras do from the wild asses, the one form being utterly undomesticable, and the other lending its back almost willingly to the burdens which man chooses to impose. It seems likely that this primitive species--perhaps more than one--whence the dog sprang was not a very vigorous or widespread form; else, as before remarked, a savage would have found it impossible to keep his half-tamed creatures from rejoining their wild kinsmen. Thus, if a man should in this day succeed in taming wolves, in a region where they were plenty, to the point where they began to abide his presence, or even to have some slight affection for him, the call of nature would be likely to lead them back to reunion with their kind. It seems pretty certain that the first steps in the domestication of the dog must be attributed not to any distinct purpose of acquiring a useful companion, but to that vague instinct which leads children to make captives of any wild animals with which they come in contact. The fancy for pets is not only common to all mankind, civilized and savage alike, but is clearly exhibited in many of the mammals below the level of man. Almost every one has observed cases where dogs, cats, and horses have become attached to some creature of an alien species with which they have been by chance thrown in contact. The higher the grade of the intelligence, the more sympathetic with other life the animal is likely to become. Thus the elephants, whose natural endowments in the way of intelligence are perhaps superior to those of any other wild creatures, are, when brought into captivity, curiously prone to form attachments to human beings. Savages appear to make but little use of their dogs in hunting. In fact, those peculiar combinations of instinct and training which we find in our hounds, pointers, setters, and other dogs which have been bred to serve the purposes of sportsmen, have been acquired but slowly, and are of no value except where the search for game is carried on under what we may term civilized conditions. The dog of the savage is in all countries much like his master--a creature with few arts and unaccustomed to subdue his rude native impulses. [Illustration: Spaniel Retrieving Wild Duck]