Then again it is to the higher animals, those nearer to ourselves, that we must look for the truest affection, and the strongest proofs of that obedience and sympathy which lead them to unite and so become strong in the face of danger. Among the beasts of prey it is true that, except the wolves and jackals, none herd together; but family love is strong and true. No tiger is so dangerous as is the mother tigress if any one approaches her young ones, or the lioness whose cubs are attacked, and in our own homes we all know the tenderness and devotion of a cat to her kittens. Nevertheless, these animals have very little social feeling; theirs are the narrower virtues of courage and fidelity to home, and to the duty of providing food for wife and children. It is among the gentler vegetable-feeders,--the antelopes and gazelles, the buffaloes, horses, elephants, and monkeys,--that we find the instinct of herding together for protection, and with this the consciousness of the duty of obedience and fidelity to the herd and to one another. It is easy to see how this was necessary to protect these feebler animals from the attacks of their ferocious neighbours, and also what an advantage they had when they had once learned to set sentinels who understood the duty of watching while others fed, as in the case of the chamois and seals, of obeying the signal of a leader like the young baboons on the march, or of putting the mothers and children in the centre for protection, as horses and buffaloes do. And there is a real significance in this gradual education in duty to others which we must not overlook, for it shows that one of the laws of life which is as strong, if not stronger, than the law of force and selfishness, _is that of mutual help and dependence_. Many good people have shrunk from the idea that we owe the beautiful diversity of animal life on our earth to the struggle for existence, or to the necessity that the best fitted should live, and the feeblest and least protected must die. They have felt that this makes life a cruelty, and the world a battlefield. This is true to a certain extent, for who will deny that in every life there is pain and suffering and struggle? But with this there is also love and gentleness, devotion and sacrifice for others, tender motherly and fatherly affection, true friendship, and a pleasure which consists in making others happy.