The theory of an external soul deposited in an animal appears to be very prevalent in West Africa, particularly in Nigeria, the Cameroons, and the Gaboon. Among the Fans of the Gaboon every wizard is believed at initiation to unite his life with that of some particular wild animal by a rite of blood-brotherhood; he draws blood from the ear of the animal and from his own arm, and inoculates the animal with his own blood, and himself with the blood of the beast. Henceforth such an intimate union is established between the two that the death of the one entails the death of the other. The alliance is thought to bring to the wizard or sorcerer a great accession of power, which he can turn to his advantage in various ways. In the first place, like the warlock in the fairy tales who has deposited his life outside of himself in some safe place, the Fan wizard now deems himself invulnerable. Moreover, the animal with which he has exchanged blood has become his familiar, and will obey any orders he may choose to give it; so he makes use of it to injure and kill his enemies. For that reason the creature with whom he establishes the relation of blood-brotherhood is never a tame or domestic animal, but always a ferocious and dangerous wild beast, such as a leopard, a black serpent, a crocodile, a hippopotamus, a wild boar, or a vulture. Of all these creatures the leopard is by far the commonest familiar of Fan wizards, and next to it comes the black serpent; the vulture is the rarest. Witches as well as wizards have their familiars; but the animals with which the lives of women are thus bound up generally differ from those to which men commit their external souls.
A witch never has a panther for her familiar, but often a venomous species of serpent, sometimes a horned viper, sometimes a black serpent, sometimes a green one that lives in banana-trees; or it may be a vulture, an owl, or other bird of night. In every case the beast or bird with which the witch or wizard has contracted this mystic alliance is an individual, never a species; and when the individual animal dies the alliance is naturally at an end, since the death of the animal is supposed to entail the death of the man.
Similar beliefs are held by the natives of the Cross River valley within the provinces of the Cameroons. Groups of people, generally the inhabitants of a village, have chosen various animals, with which they believe themselves to stand on a footing of intimate friendship or relationship. Amongst such animals are hippopotamuses, elephants, leopards, crocodiles, gorillas, fish, and serpents, all of them creatures which are either very strong or can easily hide themselves in the water or a thicket. This power of concealing themselves is said to be an indispensable condition of the choice of animal familiars, since the animal friend or helper is expected to injure his owner's enemy by stealth; for example, if he is a hippopotamus, he will bob up suddenly out of the water and capsize the enemy's canoe. Between the animals and their human friends or kinsfolk such a sympathetic relation is supposed to exist that the moment the animal dies the man dies also, and similarly the instant the man perishes so does the beast. >From this it follows that the animal kinsfolk may never be shot at or molested for fear of injuring or killing the persons whose lives are knit up with the lives of the brutes. This does not, however, prevent the people of a village, who have elephants for their animal friends, from hunting elephants. For they do not respect the whole species but merely certain individuals of it, which stand in an intimate relation to certain individual men and women; and they imagine that they can always distinguish these brother elephants from the common herd of elephants which are mere elephants and nothing more. The recognition indeed is said to be mutual. When a hunter, who has an elephant for his friend, meets a human elephant, as we may call it, the noble animal lifts up a paw and holds it before his face, as much as to say, Don't shoot. Were the hunter so inhuman as to fire on and wound such an elephant, the person whose life was bound up with the elephant would fall ill.
The Balong of the Cameroons think that every man has several souls, of which one is in his body and another in an animal, such as an elephant, a wild pig, a leopard, and so forth. When a man comes home, feeling ill, and says, I shall soon die, and dies accordingly, the people aver that one of his souls has been killed in a wild pig or a leopard and that the death of the external soul has caused the death of the soul in his body. A similar belief in the external souls of living people is entertained by the Ibos, an important tribe of the Niger delta. They think that a man's spirit can quit his body for a time during life and take up its abode in an animal. A man who wishes to acquire this power procures a certain drug from a wise man and mixes it with his food. After that his soul goes out and enters into an animal. If it should happen that the animal is killed while the man's soul is lodged in it, the man dies; and if the animal be wounded, the man's body will presently be covered with boils. This belief instigates to many deeds of darkness; for a sly rogue will sometimes surreptitiously administer the magical drug to his enemy in his food, and having thus smuggled the other's soul into an animal will destroy the creature, and with it the man whose soul is lodged in it.
The negroes of Calabar, at the mouth of the Niger, believe that every person has four souls, one of which always lives outside of his or her body in the form of a wild beast in the forest. This external soul, or bush soul, as Miss Kingsley calls it, may be almost any animal, for example, a leopard, a fish, or a tortoise; but it is never a domestic animal and never a plant.