When wild animals become tame, they are really extending or transferring to human beings the confidence and affection they naturally give their mothers, and this view will be found to explain more facts about tameness than any other. Every creature that would naturally enjoy maternal, or it would be better to say parental, care, as the father sometimes shares in or takes upon himself the duty of guarding the young, is ready to transfer its devotion to other animals or to human beings, if the way be made easy for it, and if it be treated without too great violation of its natural instincts. The capacity to be tamed is greatest in those animals that remain longest with their parents and that are most intimately associated with them. The capacity to learn new habits is greatest in those animals which naturally learn most from their parents, and in which the period of youth is not merely a period of growing, a period of the awakening of instincts, but a time in which a real education takes place. These capacities of being tamed and of learning new habits are greater in the higher mammals than in the lower mammals, in mammals than in birds, and in birds than in reptiles. They are very much greater in very young animals, where dependence on the parents is greatest, than in older animals, and they gradually fade away as the animal grows up, and are least of all in fully grown and independent creatures of high intelligence. Young animals born in captivity are no more easy to tame than those which have been taken from the mother in her native haunts. If they remain with the mother, they very often grow up even shyer and more intolerant of man than the mothers themselves. There is no inherited docility or tameness, and a general survey of the facts fully bears out my belief that the process of taming is almost entirely a transference to human beings of the confidence and affection that a young animal would naturally give its mother. The process of domestication is different, and requires breeding a race of animals in captivity for many generations and gradually weeding out those in which youthful tameness is replaced by the wild instinct of adult life, and so creating a strain with new and abnormal instincts. B. PLANT COMMUNITIES AND ANIMAL SOCIETIES 1. Plant Communities[84]